Old Facebook Account Hacked - Still Visible but Inaccessible

I am writing regarding my old Facebook account, which I used to access from an Android device. About three to four years ago, my account was hacked and I have not been able to log in since then. At that time, my brother accessed my account and changed everything, and after that I completely lost control of it. I can still see that the profile exists, but I cannot log in or manage it in any way. Because this is my personal account and contains my information and history, I would like to recover it. I kindly request that my access to this old Facebook account be restored, or that you guide me step by step on what I need to do so I can securely regain control of it.