My facebook has been hacked

I'm sorry to hear that. Here are the steps you can take to secure your account and regain access:

Change your password: Go to the Facebook login page and click on "Forgot Password." Follow the prompts to reset your password.
Check your email: Facebook will send you an email notifying you of any changes made to your account. Check your email and make sure that you recognize all the activity.
Check your privacy settings: Make sure that your privacy settings are set to your liking and that your personal information is not visible to anyone you don't trust.
Report the hack: Go to the Facebook Help Center and report the hack. This will alert Facebook that your account has been compromised.
Enable two-factor authentication: Two-factor authentication adds an extra layer of security to your account. It requires a code sent to your phone in addition to your password to log in.
Be cautious: Be wary of any suspicious messages or activity on your account. Don't click on any links or download any attachments from unknown sources.
Contact Facebook: If you're still having issues, you can contact Facebook support for further assistance.