Jellyfin is very unreliable with live tv in my experience. It takes ages to reload a playlist and sometimes the old channels still appear in library.
Is there a better alternative?
If you need it for Android than try TiviMate. Its a payed app (annually or lifetime), but its the best one I found. Free version should work enough to try it out. I got lifetime and love it, but sometimes EPG doesnt work (could be issue with my provider tho)