A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
If you edit a document which is saved to OneDrive, you get automatic saving.
Full support requires that you have a subscription version of Office, such as Microsoft 365 Personal.
Automatic saving is never supported for documents on your local drive (that is, not even for a subscription version of Office). For local documents, the AutoRecover feature brings basic security when an Office apps has crashed (see https://support.microsoft.com/en-us/office/collab-files/recover-files-in-office-for-mac).