Need Help to Build My Mobile Game Business . If you want and if i success i will return back your money

hello, brother and sister i am Golam Afridi Samir. i am from Bangladesh. And i am a student. So now i have some good idea for making some educational game like math puzzel then i contact some devloper but they asking me for a high price but i don't have that much right now so i need your help if i make a good profit and after if you want i will back your money. As a Muslim i can't take loan from bank so it wilo be great if you help me. Thank you🙂 i also have what's app +8801862888582 but i don't have bank account.