Without these two essential pieces of information it is impossible to recover your account. It is similar to going to the bank for a withdrawal without your account number and without any identification.
Account not accessed for 30 days
If you have not accessed your Gmail account for over 30 days, it may have been deleted from the Gmail server, it no longer exists and you can't recover your messages. You must then create a new one, insuring that you note your password and security. question and store it a safe place, remembering where the safe place is.
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