Ok. I missed which sub I was in, sorry. There is a Linux desktop Jellyfin app but I haven’t used it myself. In my own case I am running Jellyfin on Linux. I use various clients, including web browser (laptop), Android and Roku (TV) and find it works really well. In the past I had tried with the ‘connect directly to the server’ route with XBMC (as Kodi was called then) and it never worked well, with similar issues those described in other comments.
Yes there’s a lot of them