How to remove the slash at the end of the url in .htaccess, but at the same time, if there is no such page, send a 404 error?

Question

Apache HTTP Server

Search engines try to find different non-existent pages on the site by type /feed/, /comments/
And instead of a 404 response, they get a 301 redirect
To remove the slash at the end, I use:

RewriteCond %{HTTP_HOST} (.*)
RewriteCond %{REQUEST_URI} /$ [NC]
RewriteRule ^(.*)(/)$ $1 [L,R=301]

But it always gives a 301 redirect, even if there is no such page