Locked Out of My Gmail Account and Can't Reset the Password

I'm reaching out because I can no longer access my Gmail account at Sabbir647***@gmail.com and I need help getting back in. I'm the rightful owner of this account and suddenly lost access out of nowhere — now I can't log in at all. I don't remember the current password and I'm worried it may have been changed without my knowledge, or that my account may have been compromised. I've tried logging in multiple times but I keep getting blocked and can't get through to use my account for any of my personal needs.

I'm kindly asking for help verifying my identity through whatever security checks are available and restoring my access to Sabbir647***@gmail.com. I want to get back into this account safely and update my recovery information if needed so I don't end up locked out again in the future. I'm asking you to look into this as soon as possible so I can regain full control of my Gmail account.