That’s unfortunate to hear. Jellyfin does definitely suffer the from the problem of not having a teams developing apps under a unified banner. You can make your own, provided you’re determined enough, but guidance from the core Jellyfin team is not to be expected.
Roku, yes. Xbox as well. PS5 no, but not for lack of trying. That’s apparently on Sony.
The Xbox app is a UWP app, and has basically been abandoned.
That’s unfortunate to hear. Jellyfin does definitely suffer the from the problem of not having a teams developing apps under a unified banner. You can make your own, provided you’re determined enough, but guidance from the core Jellyfin team is not to be expected.