I have jellyfin with the radarr/sonarr/prowlarr combo going. I can “heart” things in jellyfin. But it’s recommendations are only things I already have downloaded. I see discovery in radarr, but no way to tell it if the movies I downloaded were good or bad. So I must be missing something.
If you would like to keep track of the movies you watch and give them a rating from 1 - 10, I’ll suggest Movary. I’m a contributor of the project and the goal is to eventually add support for TV Shows as well.