I use Plex and turned off all of the sponsored stuff. It’s easy. Jellyfin is neat too but I find Plex to be superior, albeit not open source. Ymmv
I do always wonder why folks complain about Plex ads. It’s pretty trivial to remove all of them.
This is not the case anymore since now users need to pay to be able to use the mobile app to stream from my server, otherwise they're limited to 5 minutes.
I ended up making a small web UI where they can log in, search for movies and episodes, and download them.
Why? Why do my users have to pay to stream from my server?
If you can find a company that went from simply paying for a license to incorporating data collection, advertising, and raised VC funds and became better after, I'd love to hear about it.