If you're locked out of your Gmail account and no longer have access to the registered phone number, you still have a few options to try to regain access:
1. **Recovery email:** If you provided a recovery email address when setting up your Gmail account, you can try using it to reset your password and regain access. Check your recovery email inbox for any instructions from Google.
2. **Security questions:** Google may prompt you to answer security questions that you set up when creating your account. If you remember the answers to these questions, you can use them to verify your identity and regain access.
3. **Account recovery form:** Google provides an account recovery form that you can fill out to request assistance if you're unable to sign in to your account. You'll be asked to provide as much information as possible to verify your identity and ownership of the account.
4. **Contact Google support:** If none of the above methods work, you can try reaching out to Google support for assistance. Visit the Google Account Help Center and look for options to contact support. Be prepared to provide details about your account and attempts to regain access.
It's important to follow Google's guidelines and procedures for account recovery to ensure the security of your account. Additionally, consider setting up alternative recovery options, such as a secondary email address or a recovery phone number, to make it easier to regain access in the future if needed.