There's a serious privacy and control problem with MS. They are positive your computer is really theirs to do with as they wish.
The latest is now Windows 11 has altered whichever settings you determined in your backup preferences for OneDrive.
I'm not against backing up data, as all here know, I am however against MS determining and acting, without obtaining your permission, to determine what you must back up from your privately owned computer.
The article linked above informs you how to regain control.
I strongly recommend reading it, but if time is short, here are the steps:
"If you do not want your computer to back up everything on your desktop or other folders, here is how to turn the feature off (you can also set up Windows 11 in offline mode):
- Right-click the OneDrive icon in the tray area, click the settings icon and then press Settings.
- Go to the "Sync and Backup" tab and click "Manage backup."
- Turn off all the folders you do not want to back up in OneDrive and confirm the changes.
- If you have an older OneDrive version with the classic tabbed interface, go to the Backup tab and click Manage Backup > Stop backup > Stop backup"