Go to the Google Account Recovery page: https://accounts.google.com/signin/recovery
Enter your Gmail address or phone number linked to the account
Click Next
Enter the last password you remember
If you do not remember it, click Try another way
Use the recovery phone number if prompted
Use the recovery email if prompted
Enter the verification code sent to your phone or recovery email
Answer security questions if asked
Confirm your identity using a trusted device or location
Follow the on-screen steps to reset your password
Create a new strong password
Sign in to your Gmail account with the new password
Update your recovery phone number and recovery email
Review account activity and security settings
If you cannot access recovery options, keep trying from a familiar device, browser, or location
If the account is inactive for a long time, check whether it was deleted or disabled
Visit Google Account Help if recovery still fails: https://support.google.com/accounts/