If you have one of the following signs, you should not be subjective because your Facebook account may have been hacked:
2.1. How to change Facebook password if you can still log into your account
Step 1 : Log in to your personal Facebook account > Click Menu > Select Settings & privacy .
Step 2 : Continue to click Settings > Select Password and security .
Step 3 : Click Change password > Re-enter your current password > Then enter your new password and confirm to complete.
2.2. Reset Facebook password if you can't log in
Step 1 : Click Help me log in at Facebook 's login interface > Enter the Email or phone number you need to reset the password > Click Find account .
Step 2 : The system will ask to send the code to your email > Click Continue to send the code > Enter the security code sent to your email by the system > Click Continue > Reset New Password > Click Continue to complete all reset password.
2.3. Report your account to Facebook as being hacked
Step 1 : Click on this link > Click My account has been compromised > Enter your email or phone number that registered your Facebook account.
Step 2 : Click on the security issues you encounter > Click Continue > Click Start to protect your account.
Step 3 : Click Continue > Reset your new password .
This is an article that guides you to retrieve your hacked Facebook account simply and effectively. If you find it interesting, please share it to support me. Good luck!