Yes, auto upload of pictures, videos and documents fromy phone to nextcloud. Contacts, tasks, notes, call history and messages are also synced with nexcloud. Nextcloud server gets scheduled backups.

On computer, I have backups of most important things, like projects code mirrored to remote got repositories.

Most of my data is also replicated to external hard drives.

I have had many catastrophic drive or device failures in the past so I want to stay in the safe side.