For example, I'm using Debian, and I think we could learn a thing or two from Mint about how to make it "friendlier" for new users. I often see Mint recommended to new users, but rarely Debian, which has a goal to be "the universal operating system".
I also think we could learn website design from.. looks at notes ..everyone else.
flatpak run com.github.iwalton3.jellyfin-media-player
You can use /var/lib/flatpak/exports/bin/com.github.iwalton3.jellyfin-media-player instead.
and then create aliases or symlinks (for example in ~/bin/) for that.