One thing that’s better about using Excel instead of Google Sheets (other than better features, of which I don’t really know how to take advantage) is the
data policy:
This data does not include your name or email address, the content of your files, or information about apps unrelated to Microsoft 365 or OneDrive.
Google’s
privacy policy is more complex and includes:
To provide services like spam filtering, virus detection, malware protection and the ability to search for files within your individual account, we process your content.
(Emphasis added.)