If you think this replaces jellyfin you probably have no ability to put yourself in other people’s shoes and your post tells us more about yourself than about the software you wax lyrical about.

I just mapped page-up to search (and you can too)

Lucky you. My laptop has a small HD, and all that space is a problem.

Nope, I was counting all dependencies, both for flatpak and apk installations.

On the other hand each flatpak uses >1Gb of disk where deb packages rarely require more than 100Mb