Don’t feel as if you have to pay loads of money to find movies filmed in French. You Tube has some gems, and some users have made playlists of short films. The Internet Archive has French films (some of them silent films) that you can watch for free, and that are within the Public Domain.
New to watching films in the Public Domain? It can be a mixed bag, and steer clear of sites that ask you for your credit card. But if you have the time, it’s well worth it to watch some of the films available.