Facebook Account Hacked and Free Fire Gmail Changed Without Permission

My Facebook account linked to the Gmail address “Piyushba****@gmail.com” was hacked, and I lost access on 18 March. This Facebook account is also bound to my Free Fire game account, and after the hack, the Gmail connection for Free Fire was changed without my permission. Because of this situation, I cannot use my Facebook account properly, and I am worried about the security of my Free Fire account and game progress. I did not authorize any changes to the Gmail or account settings. I request that my original Facebook account and the Gmail connection used for Free Fire be restored, that any unauthorized access be removed, and that my game account and progress be recovered and secured.