If I recall correctly beehaw is the one that federates with nearly no one right? If that’s the one I also think that would be most appropriate. They have good moderation and are safe space by design so this would be least problematic.

What is this for a name? In Silesian “chachara” is a female from “chachara” which means someone with no job, heavy drinker and potentially thief.

Borg + hetzner backup storage (that supports Borg and rsync but I use Borg so my backups are encrypted)