The Point is. Its impossible to get back into Gmail once you are locked out.
The links are useless as you end up stuck in a loop where Gmail says they cant verify its you and so on.
Usually they lock out if you log in from a completely different country and i was locked out a few years back and since i included my phone number as one of the recovery options i was able to recover the account easily as they will send an OTP in your registered number. If you have not done that the only option is to wait for the response from their customer service representatives and they will ask you to verify your account by asking you to provide the recent mails you have sent or received.