Как правильно должен выглядеть htaccess?

##
# @package Joomla
# @copyright Copyright (C) 2005 - 2012 Open Source Matters. All rights reserved.
# @license GNU General Public License version 2 or later; see LICENSE.txt
##

##
# READ THIS COMPLETELY IF YOU CHOOSE TO USE THIS FILE!
#
# The line just below this section: 'Options +FollowSymLinks' may cause problems
# with some server configurations. It is required for use of mod_rewrite, but may already
# be set by your server administrator in a way that dissallows changing it in
# your .htaccess file. If using it causes your server to error out, comment it out (add # to
# beginning of line), reload your site in your browser and test your sef url's. If they work,
# it has been set by your server administrator and you do not need it set here.
##

## Can be commented out if causes errors, see notes above.
Options +FollowSymLinks

## Mod_rewrite in use.

RewriteEngine On

## Begin - Rewrite rules to block out some common exploits.
# If you experience problems on your site block out the operations listed below
# This attempts to block the most common type of exploit `attempts` to Joomla!
#
# Block out any script trying to base64_encode data within the URL.
RewriteCond %{QUERY_STRING} base64_encode[^(]*\([^)]*\) [OR]
# Block out any script that includes a <script> tag in URL.
RewriteCond %{QUERY_STRING} (<|%3C)([^s]*s)+cript.*(>|%3E) [NC,OR]
# Block out any script trying to set a PHP GLOBALS variable via URL.
RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]
# Block out any script trying to modify a _REQUEST variable via URL.
RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})
# Return 403 Forbidden header and show the content of the root homepage
RewriteRule .* index.php [F]
#
## End - Rewrite rules to block out some common exploits.

## Begin - Custom redirects
#
# If you need to redirect some pages, or set a canonical non-www to
# www redirect (or vice versa), place that code here. Ensure those
# redirects use the correct RewriteRule syntax and the [R=301,L] flags.
#
## End - Custom redirects

##
# Uncomment following line if your webserver's URL
# is not directly related to physical file paths.
# Update Your Joomla! Directory (just / for root).
##

# RewriteBase /

## Begin - Joomla! core SEF Section.
#
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
#
# If the requested path and file is not /index.php and the request
# has not already been internally rewritten to the index.php script
RewriteCond %{REQUEST_URI} !^/index\.php
# and the request is for something within the component folder,
# or for the site root, or for an extensionless URL, or the
# requested URL ends with one of the listed extensions
RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC]
# and the requested path and file doesn't directly match a physical file
RewriteCond %{REQUEST_FILENAME} !-f
# and the requested path and file doesn't directly match a physical folder
RewriteCond %{REQUEST_FILENAME} !-d
# internally rewrite the request to the index.php script
RewriteRule .* index.php [L]
#
## End - Joomla! core SEF Section.

у меня вот такой htaccess и все нормально

php_value memory_limit 512M
AddDefaultCharset UTF-8
IndexIgnore *
Options -Indexes
ErrorDocument 404 /404.html

RewriteEngine On
Options +FollowSymlinks

RewriteCond %{QUERY_STRING} base64_encode[^(]*\([^)]*\) [OR]
RewriteCond %{QUERY_STRING} (<|%3C)([^s]*s)+cript.*(>|%3E) [NC,OR]
RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]
RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})
RewriteRule .* index.php [F]
# RewriteBase /
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteCond %{REQUEST_URI} !^/index\.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php [L]


<ifModule mod_expires.c>
FileETag MTime Size
AddOutputFilterByType DEFLATE text/plain text/html text/xml text/css application/xml application/xhtml+xml application/rss+xml application/javascript application/x-javascript
ExpiresActive On

#по умолчанию кеш в 5 секунд
ExpiresDefault "access plus 2592000 seconds"

#кэшировать флэш и изображения на месяц
# ExpiresByType image/x-icon "access plus 2592000 seconds"
# ExpiresByType image/jpeg "access plus 2592000 seconds"
# ExpiresByType image/jpg "access plus 2592000 seconds"
# ExpiresByType image/png "access plus 2592000 seconds"
# ExpiresByType image/gif "access plus 2592000 seconds"
# ExpiresByType application/x-shockwave-flash "access plus 2592000 seconds"

#кэшировать флэш и изображения на 2 месяца
ExpiresByType image/x-icon "access plus 5270400 seconds"
ExpiresByType image/jpeg "access plus 5270400 seconds"
ExpiresByType image/jpg "access plus 5270400 seconds"
ExpiresByType image/png "access plus 5270400 seconds"
ExpiresByType image/gif "access plus 5270400 seconds"
ExpiresByType application/x-shockwave-flash "access plus 5270400 seconds"

#кэшировать css, javascript и текстовые файлы на одну неделю
ExpiresByType text/css "access plus 604800 seconds"
ExpiresByType text/javascript "access plus 604800 seconds"
ExpiresByType application/javascript "access plus 604800 seconds"
ExpiresByType application/x-javascript "access plus 604800 seconds"

#кэшировать html и htm файлы на один день
ExpiresByType text/html "access plus 43200 seconds"

#кэшировать xml файлы на десять минут
ExpiresByType application/xhtml+xml "access plus 600 seconds"
</ifModule>

# Включаем кэш в браузерах посетителей
<ifModule mod_headers.c>

# Все html и htm файлы будут храниться в кэше браузера один день
<FilesMatch "\.(html|htm)$">
Header set Cache-Control "max-age=43200"
</FilesMatch>

# Все css, javascript и текстовые файлы будут храниться в кэше браузера одну неделю
<FilesMatch "\.(js|css)$">
Header set Cache-Control "max-age=604800"
</FilesMatch>

# Все флэш файлы и изображения будут храниться в кэше браузера один месяц
<FilesMatch "\.(flv|swf|ico|gif|jpg|jpeg|png)$">
# Header set Cache-Control "max-age=2592000"
Header set Cache-Control "max-age=5270400"
</FilesMatch>

# Отключаем кеширование php и других служебных файлов
<FilesMatch "\.(pl|php|cgi|spl|scgi|txt|xml|fcgi)$">
Header unset Cache-Control
</FilesMatch>
</IfModule>

# Включаем сжатие
<IfModule mod_gzip.c>
mod_gzip_on Yes
mod_gzip_dechunk Yes
mod_gzip_item_include file \.(html?|txt|css|js|php|pl)$
mod_gzip_item_include mime ^text\.*
mod_gzip_item_include mime ^application/x-javascript.*
mod_gzip_item_exclude mime ^image\.*
mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.*
</IfModule>
AddEncoding gzip .gz

ну это еще без моих реврайтов
А так сайт работает нормально и кешерует нормально
https://lik-astana.kz/
Вот показатели PageSpeed что очень важно для гугла
https://developers.google.com/speed/pagespeed/insights/?hl=ru&url=https%3A%2F%2Flik-astana.kz%2F&tab=mobile

На каждом сайте он выглядит по разному, потому что в него сами прописывают что им нужно.