My Facebook and Garena Free Fire Accounts Were Hacked

My Free Fire and Facebook accounts have been hacked. I'm unable to access anything as the hacker has changed both my email and phone number. I urgently need help. Here are my details: My email: smajlovic.ama***@gmail.com. My phone number: +387664903*** I also know the hacker's email: miush***@outlook.com. My UID from Free Fire: 132963667. I've been playing the game for over 5 years and have spent a considerable amount of money. Your prompt assistance in resolving this matter is greatly appreciated. Thank you for your help.