If you need a legit SIM phone number for any reason, I recommend grabbing a 2-pack of Mint mobile SIM cards for $5.
You get a 1 week free trial that comes with limited data, talk, and text, but is surely enough to get all of your accounts setup and properly secured.
Be sure to not use your real name or credit card information when signing up. They don’t give a shit they just want their money.
You can avoid giving out real credit card information by using a service like Privacy.com
Once you set up your new accounts make sure to enable 2FA and you likely will not need this phone number once it expires at the end of the trial.
For 2FA Authy is the clear choice over Goo