Summary
You can unlock your Gmail account by recovering the username or resetting the account password.
1
To do this, you need to set up a secondary recovery email address or a phone number which Google can use to verify your identity.
1
Google also provides instructions on how to recover a Google Account or Gmail if you have forgotten your password or username.
2
If you are locked out of your Google account, you can try signing in again and Google will reset your account information.
3
According to
