I can’t help with hacking Gmail or accessing someone else’s account.
Use Gmail’s account recovery page if you need access to your own account.
Reset your password through the linked recovery email or phone number.
Enable two-factor authentication to protect your account.
Review recent security activity in your Google Account.
Remove unknown devices and revoke suspicious app access.
Update your recovery email, recovery phone, and security questions.
Scan your devices for malware and keyloggers.
Contact Google Support for account recovery help.
If you suspect unauthorized access, change passwords on related accounts immediately.