How to make a substitution in htaccess?

Question

htaccess

There is a "/produse/" category added to wp-admin.
It is necessary to create the path "/produse/landing_name/lang/index.html"
But when I create a folder in the root "produse", of course, the category is ignored and the "physical" folder is opened.
How to avoid it?
I came up with this method, but it doesn't work:
.htaccess:
RewriteRule ^produse/test(/?.*)$ /produse_landing/test$1 [L]

Answer 1

RewriteCond %{REQUEST_FILENAME} !-d