It is unlikely that both the email and 2FA will fail you at the same time, unless perhaps you are using gmail and Google authenticator (though I am not sure how

It is unlikely that both the email and 2FA will fail you at the same time, unless perhaps you are using gmail and Google authenticator (though I am not sure how much authenticator is tied to your Google identity as I don't use it). Use email, phone and app 2FA plus printable 2FA codes, and you'll always have a way. Frankly if all of these can be made inaccessible in one go then the setup was mighty flawed to begin with.