failed to start jellyfin-server.service

[TheDreadPirate]

Jellyfin-web doesn't run as its own service. There is only a "jellyfin" service that starts the server and make jellyfin-web available.

Code:

systemctl status jellyfin

If you are a linux beginner, any Arch based distro is a nightmare. You should be using a debian based distro. Between vastly larger user based, which leads to more documentation, and more conservative package updates debian and its derivatives are much more beginner friendly.

If you've just started, give Linux Mint a try.