There are redundancy systems to avoid getting locked out of 2FA.

- 1st Backup Codes: Store a bunch of 2FA backup codes on a safe location, best not in YOUR home, in case it burns down.

- 2nd SMS verification: some services offer you a fallback to SMS in case you don't have your 2FA device with you. But keep in mind, that SMS is also one of the least secure 2FA methods.

- 3rd instead of having your auth codes only on one device, use a service for it like Authy, so you can install it on as much devices as you like, if one dies, it's easy to configure a new one.