How to organize correct rewrite in .htaccess for Twig template?

Question

htaccess

Hello, I have Twig, I want to make dynamically filled pages of the site. The following thought occurred to me:
1 script.php: generating a list of products
2 script.php: generating a specific product
In htaccess I write:

RewriteRule ^продукты$ /pages/1скрипт.php [NC,L]
RewriteRule ^продукты/(.*)$ /pages/2скрипт.php?продукт=$1 [NC,L]

Everything is fine in the list of products, but when I switch to a specific product, all js scripts fly for me, under the error
Uncaught SyntaxError: Unexpected token <
Templates are identical.
I conducted experiments, if from xtaccess from this line

RewriteRule ^продукты/(.*)$ /pages/2скрипт.php?продукт=$1 [NC,L]

Remove /(.*), then everything is fine. But then I won't be able to tell the template which product to generate. In general, this is not an option.
If you do not render the Twig object, there is no error either :D I still think that there is a problem in htaccess. At first I thought that I thus prohibited the loading of js files and css, but then I realized that I thought stupidity .. Please help me, I'll never know ..