Cannot change nothing in .htaccess file without server error 500 contact webmast

I tryed changing where gzip is called in .htaccess caus e the planet hosters article sayd to put gzip and the cache headers at the top. Mine starts with wp rocket settings and i can’t put gzip either before at the top or after wp rocket noteven after wordpress or even after double htaccess oath is don at the bottom but it gives an error all the time no matter what you change. I even tryed to erase 2 blank lines between comments that where empty, i didn’t change no data and it served a 500 error just like when htaccess is tamperd with. Now i have a cloudflare firewall and ddos protection, plus css,html and js minification and async going with cloudflare and wp rocket and even have autoptimize for 7 files that the others won’t defer. All those caches including opcache and pagespeed are going.

What is protecting htacess, i managed to change it before no i can’t anymore.

# BEGIN WP Rocket v3.2.3.1
# Use UTF-8 encoding for anything served text/plain or text/html
AddDefaultCharset UTF-8
# Force UTF-8 for a number of file formats
<IfModule mod_mime.c>
AddCharset UTF-8 .atom .css .js .json .rss .vtt .xml
</IfModule>

# FileETag None is not enough for every server.
<IfModule mod_headers.c>
Header unset ETag
</IfModule>

# Since we’re sending far-future expires, we don’t need ETags for static content.
# developer.yahoo.com/performance/rules.html#etags
FileETag None

<IfModule mod_alias.c>
<FilesMatch "\.(html|htm|rtf|rtx|txt|xsd|xsl|xml)$">
<IfModule mod_headers.c>
Header set X-Powered-By "WP Rocket/3.2.3.1"
Header unset Pragma
Header append Cache-Control "public"
Header unset Last-Modified
</IfModule>
</FilesMatch>

<FilesMatch "\.(css|htc|js|asf|asx|wax|wmv|wmx|avi|bmp|class|divx|doc|docx|eot|exe|gif|gz|gzip|ico|jpg|jpeg|jpe|json|mdb|mid|midi|mov|qt|mp3|m4a|mp4|m4v|mpeg|mpg|mpe|mpp|otf|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|png|pot|pps|ppt|pptx|ra|ram|svg|svgz|swf|tar|tif|tiff|ttf|ttc|wav|wma|wri|xla|xls|xlsx|xlt|xlw|zip)$">
<IfModule mod_headers.c>
Header unset Pragma
Header append Cache-Control "public"
</IfModule>
</FilesMatch>
</IfModule>

# Force deflate for mangled headers
<IfModule mod_setenvif.c>
<IfModule mod_headers.c>
SetEnvIfNoCase ^(Accept-EncodXng|X-cept-Encoding|X{15}|~{15}|-{15})$ ^((gzip|deflate)\s*,?\s*)+|[X~-]{4,13}$ HAVE_Accept-Encoding
RequestHeader append Accept-Encoding "gzip,deflate" env=HAVE_Accept-Encoding
# Don’t compress images and other uncompressible content
SetEnvIfNoCase Request_URI \
\.(?:gif|jpe?g|png|rar|zip|exe|flv|mov|wma|mp3|avi|swf|mp?g|mp4|webm|webp|pdf)$ no-gzip dont-vary
</IfModule>
</IfModule>

# Compress all output labeled with one of the following MIME-types
<IfModule mod_filter.c>
AddOutputFilterByType DEFLATE application/atom+xml \
		                          application/javascript \
		                          application/json \
		                          application/rss+xml \
		                          application/vnd.ms-fontobject \
		                          application/x-font-ttf \
		                          application/xhtml+xml \
		                          application/xml \
		                          font/opentype \
		                          image/svg+xml \
		                          image/x-icon \
		                          text/css \
		                          text/html \
		                          text/plain \
		                          text/x-component \
		                          text/xml
</IfModule>
<IfModule mod_headers.c>
Header append Vary: Accept-Encoding
</IfModule>
</IfModule>

# END WP Rocket

# PH pagespeed start
<IfModule pagespeed_module>
ModPagespeed on
ModPagespeedRewriteLevel PassThrough
ModPagespeedEnableFilters add_head,fallback_rewrite_css_urls,flatten_css_imports,rewrite_style_attributes_with_url,extend_cache,convert_meta_tags,combine_javascript,rewrite_javascript,inline_javascript,rewrite_css,combine_css,inline_css,inline_import_to_link,rewrite_images
</IfModule>
# PH pagespeed end
#PH auth start
ErrorDocument 401 default
<FilesMatch "^((wp-login)\.php|(xmlrpc)\.php|(admin-ajax)\.php)$">
AuthType Basic
AuthUserFile /home/punkmmur/.htpasswd
AuthName "Double Authentification PlanetHoster"
require valid-user
</FilesMatch>
#PH auth end
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

#Expires cache end
# BEGIN Cache-Control Headers
<IfModule mod_expires.c>
  <IfModule mod_headers.c>
    <filesMatch "\.(ico|jpe?g|png|gif|swf)$">
      Header append Cache-Control "public"
    </filesMatch>
    <filesMatch "\.(css)$">
      Header append Cache-Control "public"
    </filesMatch>
    <filesMatch "\.(js)$">
      Header append Cache-Control "private"
    </filesMatch>
    <filesMatch "\.(x?html?|php)$">
      Header append Cache-Control "private, must-revalidate"
    </filesMatch>
  </IfModule>
</IfModule>
# Disable ETags
<IfModule mod_headers.c>
	Header unset ETag
</IfModule>
FileETag None
php_value upload_max_filesize 200M
php_value post_max_size 200M

# Gzip compression
FileETag MTime Size
# Gzip compression
# Active compression
SetOutputFilter DEFLATE
#Activation du Mod Deflate
#Activation du Mod Deflate
<IfModule mod_deflate.c>
# Compresse les fichiers HTML, CSS, JavaScript, Text, XML et les fonts
  AddOutputFilterByType DEFLATE application/javascript
  AddOutputFilterByType DEFLATE application/rss+xml
  AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
  AddOutputFilterByType DEFLATE application/x-font
  AddOutputFilterByType DEFLATE application/x-font-opentype
  AddOutputFilterByType DEFLATE application/x-font-otf
  AddOutputFilterByType DEFLATE application/x-font-truetype
  AddOutputFilterByType DEFLATE application/x-font-ttf
  AddOutputFilterByType DEFLATE application/x-javascript
  AddOutputFilterByType DEFLATE application/xhtml+xml
  AddOutputFilterByType DEFLATE application/xml
  AddOutputFilterByType DEFLATE font/opentype
  AddOutputFilterByType DEFLATE font/otf
  AddOutputFilterByType DEFLATE font/ttf
  AddOutputFilterByType DEFLATE image/svg+xml
  AddOutputFilterByType DEFLATE image/x-icon
  AddOutputFilterByType DEFLATE text/css
  AddOutputFilterByType DEFLATE text/html
  AddOutputFilterByType DEFLATE text/javascript
  AddOutputFilterByType DEFLATE text/plain
  AddOutputFilterByType DEFLATE text/xml
# Ce code est pour assurer une compatibilité avec les anciens navigateurs
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
Header append Vary User-Agent
</IfModule>

#Activation du mod Expires
#Customize expires cache start - adjust the period according to your needs

# Expires headers (for better cache control)
  #Activation du mod Expires
	#Customize expires cache start - adjust the period according to your needs

	# Expires headers (for better cache control)
	<IfModule mod_expires.c>
	  FileETag MTime Size
	  ExpiresActive on
		# Perhaps better to whitelist expires rules? Perhaps.
		ExpiresDefault                              "access plus 1 month"
		# cache.appcache needs re-requests in FF 3.6 (thanks Remy ~Introducing HTML5)
		ExpiresByType text/cache-manifest           "access plus 1 month"
		# Your document html
		ExpiresByType text/html                     "access plus 1 month"
		# Data
		ExpiresByType text/xml                      "access plus 1 month"
		ExpiresByType application/xml               "access plus 1 month"
		ExpiresByType application/json              "access plus 1 month"
		# Feed
		ExpiresByType application/rss+xml           "access plus 1 hour"
		ExpiresByType application/atom+xml          "access plus 1 hour"
		# Favicon (cannot be renamed)
		ExpiresByType image/x-icon                  "access plus 1 week"
		# Media: images, video, audio
		ExpiresByType image/gif                     "access plus 1 year"
		ExpiresByType image/png                     "access plus 1 year"
		ExpiresByType image/jpeg                    "access plus 1 year"
		ExpiresByType image/webp                    "access plus 1 year"
		ExpiresByType video/ogg                     "access plus 1 year"
		ExpiresByType audio/ogg                     "access plus 1 year"
		ExpiresByType video/mp4                     "access plus 1 year"
		ExpiresByType video/webm                    "access plus 1 year"
		# HTC files  (css3pie)
		ExpiresByType text/x-component              "access plus 1 month"
		# Webfonts
		ExpiresByType application/x-font-ttf        "access plus 1 year"
		ExpiresByType font/opentype                 "access plus 1 year"
		ExpiresByType application/x-font-woff       "access plus 1 year"
		ExpiresByType application/x-font-woff2      "access plus 1 year"
		ExpiresByType image/svg+xml                 "access plus 1 year"
		ExpiresByType application/vnd.ms-fontobject "access plus 1 year"
		# CSS and JavaScript
		ExpiresByType text/css                      "access plus 1 month"
	  ExpiresByType text/javascript               "access plus 1 month"
		ExpiresByType application/javascript        "access plus 1 month"
		# Others
		ExpiresByType application/pdf "access plus 1 month"
		ExpiresByType application/x-shockwave-flash "access plus 1 month"
	</IfModule>

# BEGIN ShortPixelWebp

# END ShortPixelWebp