If Facebook account hacked, and you wish to get to your old account, by then, you need to contact the help gathering. For it, you have to go to the official site and starting there hit on the login button. As of now, you are expected to enter your customer confirmations. If it shows a hacked account still, by then connect with us for help.
https://www.numbersforsupport.net/blog/facebook-hacked-account/