Backup to secondary graphene device

idk

I use syncthing for my documents and photos. The copies synced to my LinuxBox at home are backed up and I have offline copies of that stuff.

I don't need a backup of anything else.

My email is on Proton.

I never back up the device just use individual backup / services for photos, documents, contacts etc...

Unpopular take I know but. I want a fresh Install. I download my apps with zapstore and most things synced and transfer needed data manually...