OneDrive file versions

1)     Go to the OneDrive website. (https://go.microsoft.com/fwlink/p/?LinkID=251869)

2)     Find the document you want to restore to an earlier version and tap the dots to the right of the document name
 

In the menu that appears, tap on 'Version log'.

3)   The Version History pane opens. Select the ellipse (...) next to the version of the document you want to recover, and then click Restore.

If you see a confirmation message, click OK.
The document version you selected becomes the current version. Previous current version, becomes the previous version in the list.

More information

(https://support.office.com/en-us/article/restore-a-previous-version-of-a-file-in-onedrive-159cad6d-d76e-4981-88ef-de6e96c93893)

(https://www.microsoft.com/en-us/microsoft-365/blog/2017/07/19/expanding-onedrive-version-history-support-file-types/)