How to Fix When You’re Locked Out of Your Gmail Account

Step1: Open the Gmail sign-in page and select Forgot email.

Step2: On the Find your email page, enter your phone number or recovery email.

Step3: Select Next. Enter the First Name and Last Name you use for this specific account.

Step4: Select Send to receive a 6-digit verification code on the phone number or recovery email associated with the account.

Step5: Type the verification code in the field and select Next.

Step6: Choose the username you want to recover. Then Enter your password and log into your Gmail account.

Credit : https://www.lifewire.com/fix-it-when-locked-out-of-gmail-account-5220812