If you have been hacked on Facebook, the first thing you should do is change your Facebook password. You should also report the hack to Facebook. They will help you to secure your account and track down the hacker. You should also change your passwords for any other accounts that were using the same password as your Facebook account.
If you have been hacked, it is important to take steps to protect your account and your personal information. Hackers can use your personal information for identity theft or other malicious purposes. Changing your password and taking other security measures can help to keep you safe online.