You just put in your back up codes to restore access. That’s why the backup codes/words exist. If I lose my crypto wallet or it gets stolen, I go to my bank, get the words from my safe deposit box, and use those words to seed my new wallet. Doesn’t have to be a bank — a home safe or filing cabinet will work, but when my phone broke I had zero problem restoring my 2FA on my new phone using the backup words.