Got a YunoHost server home server setup, though im still tweaking applications on it. I do have NextCloud Integrated with OnlyOffice on it.
Backup strategy (now that I can confirm where all the files actually are). Is to use the YunoHost built in backup mechanism, but then do a second layer of redundancy, by making those backups covered by a borgbackup rotation.
Will be migrated individual devices to borgbackup aswell, and demphasizing “syncthing all the things” as a redundancy plan. May consider syncthing still on a case by case bases where syncing when the homeserver is unreachable is still desireable.