Crypto app where I can receive payments directly on my wallet

I am looking for a skilled developer who can create a crypto app that allows me to receive payments directly on my wallet. The following requirements are necessary for the project:
1) app need to have log in for admin and users
Admit can start countdown, winner etc..
2) users can buy tickets on app so each tickets will be numbered for each user
3) i need to have a way to contact the winner
4) user can only pay via crypto directly in to my wallet so i need someone that can deal with the payment gateway

- Acceptance of multiple cryptocurrencies (Bitcoin, Ethereum, Litecoin, etc.)
- Integration of a built-in wallet for payment processing
- Basic payment processing features only (no need for transaction history or currency conversion)

Ideal skills and experience for the job include:

- Proficiency in cryptocurrency payment systems and blockchain technology
- Experience in developing mobile applications for both iOS and Android platforms
- Knowledge of programming languages such as Java, Swift, and Kotlin

If you have the expertise to develop a robust and user-friendly crypto app that meets my requirements, please submit a proposal for consideration.