My setup is a conglomeration of a quite a few different pieces; but they are not all required. I'd encourage you to explore, start small and expand into new pieces/areas when you feel comfortable. I started this ~8 years ago with basically 0 knowledge of hosting web services; and just built up the knowledge through exploration over time.

If all you're looking to do is watch movies, and you're happy to play the downloaded media directly on your pc (or move the files around manually, just like manual torrenting); the only piece you need is Radarr.

Once setup; You tell it what movies you want to watch, it searches for those using the indexers you've given it (YourBittorrent, TPB, and BadassTorrents for example), choses the best results out of them all based on things like upload date, seeds, quality descriptors in the title, etc. Then passes that to your torrent/usenet client. Finally it will rename and sort the files into nicely organized media folders for you, once the download client has marked it as complete.

https://www.stremio.com/

https://torrentio.org/

It's complicated to get set up. Once done, it makes everything very simple.