A Microsoft file hosting and synchronization service.
Thank you for reaching out to the Microsoft Q&A Forum.
I understand how stressful this situation can be, especially when your documents suddenly disappear.
Since you are using OneDrive, please visit OneDrive on the web and sign in with the same Microsoft account you use on your Mac. Try locating your files in their original folders to see whether they are still available there.
If you’re able to see your files on OneDrive on the web, the data itself hasn’t been deleted and the issue may be related to syncing on your Mac. Please click the OneDrive cloud icon in the macOS menu bar to check the sync status, ensure you’re signed in, and confirm that syncing is running normally.
If you cannot find them there, check all possible recovery locations such as the OneDrive Recycle Bin, the Second-stage Recycle Bin, and your Mac’s local Trash. If you find your files, you can restore them to their original locations.
You can also refer to this article for detailed steps: Restore deleted files or folders in OneDrive - Microsoft Support
If your files were deleted, overwritten, or affected by malware, and you are using a Microsoft 365 subscription, you may be able to restore your entire OneDrive to a previous point in time using the Restore your OneDrive feature. You can find more information here: Restore your OneDrive
Note: This feature restores your OneDrive to an earlier point in time. Any files or folders created after the selected restore point will be moved to your OneDrive Recycle Bin.
As you are part of an educational institution, I also recommend contacting your school’s IT department or Microsoft 365 administrator as soon as possible to explore all available options.
I truly appreciate your patience and hope you’ll be able to resolve this quickly.
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