Which country is this?because how can we give good advice if we don't know about other regulations in your country.

But of course nothing best in Crypto is creating your own Gambling site,this will surely brings you money but of course this market needs knowledge and also you must be techy so better learn those first.

Both of our suggestion requires huge capital but until he mentions what country he resides. There might be a conflict about his country's rule about gambling but we don't know as long as it's gotta be a legitimate business and registered to his government, that will be a good business.

Being the first is what I'm thinking because there are many advantages to it. The suggestion of guigui got me because it's a good suggestion for me, the ATM management which is also like an exchange. That's a clever idea.