My setup here: a headless RPI4, running :
- RPI OS lite;
- a transmission server so I can add torrents from my computer, or phone using a browser;
- a VPN running all the time;
- a Jellyfin server.
On my TV and other devices, I’m running a Jellyfin client. My experience with Plex is not as good as with Jellyfin, as Plex struggles to play some MKV files.