OneDrive keeps moving my desktop files on Windows 11

If the Desktop still opens the OneDrive copy after that, fix the folder location too. In File Explorer right-click Desktop in the left panel, Properties, Location tab, Restore Default. It moves the path back to your own user folder. If Manage back up says your organisation controls it, it's a work policy and you won't be able to turn it off yourself.

That's OneDrive's folder backup, and it often gets switched on during Windows setup without you really noticing. Click the OneDrive cloud icon > gear > Settings > Sync and backup > Manage back up, and turn off Desktop. Heads up: after you turn it off, the files don't move back by themselves. They stay in the OneDrive\Desktop folder, and your real desktop can look empty. Open File Explorer, go into OneDrive > Desktop and drag them back to your local Desktop folder.