Start jellyfin server on startup

[Danieloxx]

Are you sure you installed Jellyfin with the debuntu script you mentioned?  It would create a service.  It sounds like you've installed the server flatpak.

Code:

flatpak list | grep -i jellyfin

I installed the server from flatpak.
How can I make it work??

Result:
flatpak list | grep -i jellyfin
Jellyfin Server org.jellyfin.JellyfinServer 10.10.7 stable system