How to setup rewriterule in htaccess for home page and categories?

Question

Apache HTTP Server

I can't set up htaccess
Given:
1.domen.ru
2.I want to make domen.ru/namecat1/namecat2/ be passed to category.php $1 $2
3. so that the main page does not go to category.php if one domain is without domen slashes .ru ===>index.php
4. it turned out to do this, but when removing repeated slashes, it throws domen.ru/aaaa/user15/main/?category=namecat1/namecat2 to the server path,
but you just need to remove more than 2 slashes at the end
5. wrote code like this:
rewriterule ^(.*[^/]+)/?$ category=$1
was initially done with the addition of domen.ru/PRODUCTS/category1/category2/
everything worked well, just for SEO I want to remove products
there the line was like this:
rewriterule ^products/(.*[^/]+)/(.*[^/]+)/(.*[^/]+)/?$ category[]=$1&category=$2&category=$3
But if I remove products, then the main page also leads to category.php
I don’t understand how to write cond for improvement

Answer 1

Well, who told you that the GET parameter is part of the url?
Here you will have an example of how to make a redirect with get parameters.
https://donatstudios.com/RewriteRule_Generator
And here I wrote how to remove the category.
https://klondike-studio.ru/blog/snipet-for-htaccess/