A Microsoft file hosting and synchronization service.
Hello. Unfortunately, a server-side restore is not something Microsoft support can carry out for personal OneDrive accounts. Microsoft does not keep recoverable backups on the personal account side that an agent can access on your behalf.
That said, if you have a Microsoft 365 subscription, there is a self-service option called Restore your OneDrive. It lets you roll back all activity on your files and folders to any point within the last 30 days, covering deletions, overwrites, corruption, and malware. To use it, go to onedrive.com, click the gear icon, select Options, then choose Restore your OneDrive. Use the activity slider to pick a date before June 14, review what the chart shows, and confirm the restore.
A couple of quick questions that might open up additional options: when you check the Recycle bin at onedrive.com right now, is it empty or do any of the missing files show up there? Also, were those files ever synced locally to a PC or another device? If so, there is a chance a copy may still be sitting in the OneDrive folder on that machine.
If the files are no longer in the Recycle bin and cannot be recovered through Files Restore, there is no support call that would change that outcome.