Do they now back u TOTP generators? I lost access to an account I had since my teens because when restoring from backup, I had no MFAs in my Google Authenticator. Since I had imported my teenage cell # into Google Voice, when the backup codes I'd generated for the account failed to restore access, I lost access to my gmail + my phone number I'd had for decades, despite taking what seemed to be reasonable steps.
(I'd backup my iPhone to my laptop, and backup my laptop to a USB hard drive, one of which would live in my house and another in a secure offsite location.)