How can Nextcloud data be backed up and restored independently? (Versioning / Snapshots)

Whenever multiple users are interacting with a Nextcloud installation, there is a possibility of error. Potentially, a family member may delete an old picture or a co-worker might accidentally tick off a task or calendar event, resulting in issues for other users. When full filesystem snapshots or backups of the whole Nextcloud directory are available, they can be used to restore an old state of the entire server. This is fine in case of a complete system crash. However, it becomes an issue if the problem is only noticed after a while and in the mean time, users have modified other data. Then, a choice must be made between rescuing old data and destroying all progress or keeping the current state. The Nextcloud documentation only describes a way to restore the entire installation. Is there a way to more intelligently back up all Nextcloud data automatically (files, messages, calendars, tasks, etc.) so that it can be restored independently? (Maybe even in an online state?)