I use Proxmox PBS for all my backups. Datastore is on my file server at home. I sync the datastore daily to a little NAS at a family members house and to a super cheap storage VPS on the other side of the country. I also do a manual sync to an external drive that keep offline at home.

Any super important documents such as tax records health related files, backup of the data volume from vaultwarden, or anything related to wills & estates get backed up as well to 2 USB thumb drives that are LUKS encrypted. I keep 1 in my go bag and another is hidden somewhere… Thumb drives get updated once a month, or sooner if anything major changes.