BGMI & Free-Fire Android Tournaments

I need a production-ready Android application that lets gamers enter Free Fire and BGMI single-elimination tournaments using a dual-currency system. Players will spend coins to register, earn diamonds... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, Android App Development, Game Development, Java, Kotlin, Mobile App Development, Node.js, PHP, Unity 3D, Web Development)