Facebook Account Compromised And Free Fire Account Unlinked After Theft

I am writing regarding a serious problem with my Facebook account, which I was using to log in to my Free Fire game account on an Android device. On the day of the incident, I shared my Facebook password with another person. That person then took over and sold my game account to someone else without my consent. After realizing this, I immediately tried to secure my Facebook by changing my password. However, when I later tried to log back into my Free Fire account, I saw that my Facebook had been unlinked from my Free Fire account and I could no longer access it. The phone number I use to log in to the affected Facebook account is 8074900***. I believe my account has been misused and that I am the victim of theft and unauthorized access. I request that you investigate this situation, secure my Facebook account, and help me recover or restore access to the connected Free Fire account as much as possible.