So far, everything gets backupped automatically, but on top of this, i already am in the habit of backupping important documents by hand in files that don’t get synced. So, as soon as i’m editing important files, i backup them, on top of the sync folders. I will need to switch to manual backups anyway, since proton drive - which syncs automatically - is not yet available on linux, but they do have a web app where you can backup manually.