Am I a lost cause?

This is my first year in IG (year 10) and my first exams start 29 April, I'm taking 5 subjects Math, English, Chemistry, Biology, Physics. But sadly, I've been cheating all the way through since the very beginning of the courses online in all my exams as I'm a private candidate. And because I'm a trash piece of shit and I'm good in cheating, I scored A* in all my exams and mocks..... So all people around me expect great things and I feel like shit that I'm f***ing playing with them. I want to study I have motivation now I don't want to cheat again , is it too late to start? Is it possible to get A stars in all my subjects.Please help me.....