How to shorten links in htaccess?

Question

htaccess

Good afternoon!
There are links like:
http://site.ru/main/{folder that can change}/folder/{file names of which are many}.php
How to do it:
http://site.ru/{file names of which are many}.php
or
http://site.ru/pages/{there are a lot of file names}.php
Tried a lot of options already.... so far nothing has helped((
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UPD
Finally got to do what would be the name file changed, but how to make the folder change - I can’t catch up (

RewriteRule ^([a-zA-Z0-9_-]+).php$ design/FOLDER/html/$1.php [L]

Can I set some variable or something? (FOLDER is a folder with site files (index.php, about.php, etc.))

Answer 1

What have you tried?
Something like this:
RedirectMatch ^/main/.*/folder/(.*\.php)$ www.site.ru/pages/$1
?