My account was hacked and my phone number was changed.

I can still log in via Facebook, but I cannot change the phone number because the phone was formatted and the email was lost because I always log in via Facebook and do not care about the email, and when I contact support, I receive this message in the picture, even though it is the same phoneI have all the evidence that I own the account, including photos of old conversations, photos of previous names in the game, and also that I still have access to Facebook and many other pieces of evidence.What should I do to fully recover my account and expel the hacker who changed my account settings and phone number?