#2FA with a https://www.yubico.com/ Yubikey or https://solokeys.com/ Solokey is pretty decent. But a lot of sites choose not to support real 2FA / #MFA and instead require a cell phone number (weak, because your phone is easy to subvert ... call your cellular provider and tell them they're you and they have a new phone. The "helpful" people there will gladly give control of your number to an entirely different sim card).