@sun i absolutely hated every jellyfin frontend i tried (~2y ago). i use plex, it does not give me issues from the UI end. it runs on my xbox, browser for web, and phone app. i sometimes have problems but theyre all because my server is a rpi 4 with usb hdds (i really need to upgrade).
the phone app is a flat fee purchase but otherwise im using all free stuff. im not missing out on any paid features bc its all related to their shitty services which i also never use. i dont really care about analytics or nonfree software i just want a clean experience once i have things set up.