I’ve been looking at getting a odroid h4 ultra as my next toy. It would suit you I think.

Take my upvote. I use owncloud, I have no need for apps on my self hosted cloud backup.

Regardless, it is well worth your time. Find the wormhole, steal alien tech, build a fleet, become invincible.

Perhaps not Foss, but definitely free (beer) , endless sky, available on steam

I use an oracle free tier server for my heavy lifting (wordpress and owncloud), and have a pi4 on my fibre optic connection which is my storage.