Ah, I misunderstood then, I thought the linux option still had a win key on it and that it was different in some other way. Thanks for clarifying

The linux keyboard has a Windows key?? What’s special about it then, that makes it a linux keyboard and not a windows one?

I’ll echo the rest of the comments and say Debian with docker. I use podman myself but the setup should be similar enough. I used the official Jellyfin guide from their wiki and got everything working in a day, including transcoding.

They use XDG Desktop Portal, which makes video and audio capture system level instead of application level to enhance security. When a program wants to record your screen you get a pop up to choose which screen/window to share. After that the app can only see that window or screen.