Don't rely on backup to G-Drive! I lost access to numerous accounts because I factory reset my phone and when ai tried to restore my accounts through DUO, the G-Drive connected backup service failed and I could not restore my access to many of my 2-factor enabled logins. So I stopped using Authenticator applications altogether and I recommend everyone to use physical security keys instead. Buy two, keep one for backup in case you lose one. Then enable Advanced Protection in Google.