I use FinAmp client with Jellyfin for music.

I agree the Jellyfin interface is not well optimized for music, but FinAmp negates most of that and my phone is how I mostly listen to music anyway.

I like Navidrone, but it’s a duplicate service that doesn’t really have a big value add over Jellyfin beyond the ability to share tracks with friends. A major feature upgrade, but not something I use terribly often.