Facebook is a platform where users store their data. But it can be risky if your Facebook account gets hacked. Some symptoms can show you that the account gets hacked like unknown changes in your account and data. Friends are added to your friend list without your knowing or your password gets changed automatically.
To recover a hacked Facebook account, you should try the following methods:
- Change or reset your password.
- Change your email password
- Report Facebook hacking
Source: https://getassist.net/how-to-recover-hacked-facebook-account/