Not working this part really

# Admin area and message are special scripts
RewriteRule ^admin/([a-z0-9]+) admin.php?m=$1 [QSA,NC,NE,L]
RewriteRule ^(admin|login|message)(/|\?|$) $1.php [QSA,NC,NE,L]

Added 49 seconds later:

im using CyberPanel openlitespeed

Sorry, I'm using a www server on Apache 2.4

if the rules are the same in Litespeed and Apache, it should work.

your file .htaccess should have the form for the Apache server.

################ Cotonti Handy URLs for Apache #######################

# Below are the rules to be included in your main .htaccess file or httpd.conf

# Rewrite engine options
Options -Indexes
RewriteEngine On

# Server-relative path to Cotonti. Replace it with your path if you run Cotonti
# in a subfolder
RewriteBase "/"

# Prevent to load sensible data
<FilesMatch "\.(dat|tpl|inc)$">
order deny,allow
deny from all
</FilesMatch>

# Language selector
RewriteRule ^(en|ru|de|nl|ua)/(.*) $2?l=$1 [QSA,NC,NE,DPI]

# Sitemap shortcut
RewriteRule ^sitemap\.xml$ index.php?r=sitemap [L]

# Admin area and message are special scripts
RewriteRule ^admin/([a-z0-9]+) admin.php?m=$1 [QSA,NC,NE,L]
RewriteRule ^(admin|login|message)(/|\?|$) $1.php [QSA,NC,NE,L]

# System category has priority over /system folder
RewriteRule ^system/?$  index.php?rwr=system [QSA,NC,NE,L]

# All the rest goes through standard rewrite gateway
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^?]+) index.php?rwr=$1 [QSA,NC,NE,L]

<IfModule mod_headers.c>
Header always append X-Frame-Options SAMEORIGIN
</IfModule>

Not working this part really

# Admin area and message are special scripts
RewriteRule ^admin/([a-z0-9]+) admin.php?m=$1 [QSA,NC,NE,L]
RewriteRule ^(admin|login|message)(/|\?|$) $1.php [QSA,NC,NE,L]

Added 49 seconds later:

im using CyberPanel openlitespeed

your file .htaccess should have the form for the Apache server.

################ Cotonti Handy URLs for Apache #######################

# Below are the rules to be included in your main .htaccess file or httpd.conf

# Rewrite engine options
Options -Indexes
RewriteEngine On

# Server-relative path to Cotonti. Replace it with your path if you run Cotonti
# in a subfolder
RewriteBase "/"

# Prevent to load sensible data
<FilesMatch "\.(dat|tpl|inc)$">
order deny,allow
deny from all
</FilesMatch>

# Language selector
RewriteRule ^(en|ru|de|nl|ua)/(.*) $2?l=$1 [QSA,NC,NE,DPI]

# Sitemap shortcut
RewriteRule ^sitemap\.xml$ index.php?r=sitemap [L]

# Admin area and message are special scripts
RewriteRule ^admin/([a-z0-9]+) admin.php?m=$1 [QSA,NC,NE,L]
RewriteRule ^(admin|login|message)(/|\?|$) $1.php [QSA,NC,NE,L]

# System category has priority over /system folder
RewriteRule ^system/?$  index.php?rwr=system [QSA,NC,NE,L]

# All the rest goes through standard rewrite gateway
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^?]+) index.php?rwr=$1 [QSA,NC,NE,L]

<IfModule mod_headers.c>
Header always append X-Frame-Options SAMEORIGIN
</IfModule>

my .htaccess openltiespeed and like this.

https://www.cotonti.com/forums?m=posts&q=9301&n=last#bottom