Are you looking for your contacts?
Contacts, call log entries and SMS are not stored on Google Drive, but are stored within your avast! Account.
Note that you can also access all your files backed up to Google Drive directly from your avast! Account. Try it!
Visit your avast! Account:
https://my.avast.com
Browse to your device to access all your data:
https://my.avast.com/#devices/view/deCeB9rn7YCTgTCP