Authy is a nice alternative to google's Authenticator
Was bought by Twilio, but still rocking.
I love the plugin for raycast.app for it
You set a master password and can login back with your phone number/master password in any device
Much easier to not fuck up 2FA with it when changing phones
I lost access to at least one account as a result and had to submit identity documents to recover the account.
I now make sure I have backup codes stored somewhere.
Interestingly, in the past couple of weeks, Google Authenticator can now back up to your Google account.