How to Restore Deleted Files and Folders in Microsoft OneDrive

If you deleted a file or folder from your OneDrive account, you can restore them from the Recycle Bin within 30 days.
After 30 days, the deleted file or folder is automatically and permanently deleted from the Recycle Bin.


Step 1: log in to your OneDrive account and then click “Recycle Bin” in the left-hand pane.



Step 2: Once in the Recycle Bin, right-click the file or folder you want to restore and then click “Restore” from the context menu.


Step 3: The selected file or folder will then be restored. If you want to restore every file and folder in the Recycle Bin at once.
Click the “Restore All Items” option at the top of the screen.



Step 4: A confirmation window will appear. Click the blue “Restore” button to proceed.

All of the files and folders will be restored.



Credit : https://www.howtogeek.com/759403/how-to-restore-deleted-files-and-folders-in-microsoft-onedrive/