Duplicati is at it’s base just a fancy ui for backups as opposed to custom bash scripts.

It does support s3 storage, SFTP, ftp, and a bunch of other stuff so this might actually be on point for your off-site backup design.

Of course off-site backups are superior. If my home burns down I’m fked. I do use different hdds though, so at least there’s some security isolation in that. Also if one of them breaks, the other one doesn’t necessarily.