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 ...
I've used Google Authenticator for years. It's not a default Android app, but I've used it for so many years at this point that it does just transfer from phone to phone, so it feels very much default ...