A family of Microsoft word processing software products for creating web, email, and print documents.
Do you recall if the OneDrive folder showed “Files On-Demand” or offline copies before?
Open your local OneDrive folder in File Explorer, right click it, select Properties, then Previous Versions, restore a version from before the files disappeared. Then sign in to OneDrive online, check Recycle Bin, then use Restore your OneDrive to roll back the whole drive to an earlier date. Also open Microsoft Word, go to File, Open, Recover Unsaved Documents, and run a full search *.docx across your drive in case files stayed in a different path.