Gmail Account Hacked for 2 Years

For about two years I have not been able to access my Gmail account with the address “sannael***@gmail.com”. At that time, the email address on my account was changed without my knowledge and I lost access. I normally log in to this Gmail account using an Android phone, and after this change I could no longer enter either Gmail or the connected game account. This Gmail address is linked to my Free Fire game account, and because I cannot access the Gmail anymore, I also lost access to my Free Fire account. I did not authorize any change of email and I believe my account was taken over by someone else. I do not have screenshots of the incident, but I am the original user of this Gmail and Free Fire account. I kindly request that my Gmail account be recovered or that access be restored to me after the necessary security checks, so that I can also get back my Free Fire account that is connected to it. I am ready to provide any additional information that may be needed to confirm my identity and ownership of the account.