Well, you could at least add a " ? " in your thread title.
For the method, try register using online phone numbers. They're free, but most of them won't work to verify Gmail because they're already used for Gmail, so try to buy some phone numbers and use them! OR just buy a verified Gmail account.
Note: You can create more than 1 Gmail with 1 number, I don't know exactly what's the limit.
Note 2: Why Gmail specifically? you can create an unlimited Protonmail account without any verification, you just need to not be a robot : D.