If there are no index files in the directory - redirect to the main file?

Question

Apache HTTP Server

RewriteCond %{REQUEST_FILENAME} -d
RewriteRule (.*) load.php [L]

Here is the code I have and it redirects all requests that go to the directory to the main file.
I need to make sure that if there is an index file in this directory, then load it, and not the main file.

Answer 1

If there is no index in the directory, then the server returns an error 403. Maybe it makes sense to change the directive to ErrorDocument 403 and open it with the index file.