A family of Microsoft word processing software products for creating web, email, and print documents.
I worked for hours adding and changing on my2 saved documents and auto save did not keep any of my work.
Automatic saves will only work if your document is saved to OneDrive (or SharePoint). Use the Version History facility. See https://support.microsoft.com/en-us/onedrive/restore-a-previous-version-of-a-file-stored-in-onedrive .
For local documents, you may be able to find .asd files left behind. Try opening those in Word (via File > Open > Browse). Note that .asd files are normally discarded, unless Word crashes, in which case the files provide basic recovery.