You can use the Commvault software to back up and restore SharePoint Online.
Data You Can Back Up
Lists and list items
Sites and subsites
Pages, permissions, forms, versions, templates, settings, and views
Web parts and customizations
SharePoint Online Office 365 Group site files, which includes the document library.
Wiki page library containing the Team data.
Note: You cannot back up a SharePoint app.
Backups You Can Perform
When You Can Perform Backups
On a schedule: The server backup plan that you assign to the SharePoint Online app manages scheduled backups
On demand: You can perform on-demand backups at any time
Backups You Can Use for Restores
Backups from any date/time, including the most recent backup
Destinations You Can Restore To
The current location (in place)
A different SharePoint site (out of place)
During backups and restores, both basic authentication and modern authentication can be used to access user data.