Google Authenticator isn't bad, it's just that Bitwarden Authenticator is better.

None ...

First, turn on two-factor authentication for the account. You'll get a QR code or setup key. Next, open the Google Authenticator app and tap the plus sign. Record the 2FA code/key. Whenever you're ...

Both apps work well, but of course are tailored to the vendors products. So if you are in a Microsoft-centric environment, get the Microsoft Authenticator, and vice versa for Google.