From the Day Gambling was Introduced in my Life up until today. I always ask how do game developers/owners run a game?

so here I am, has na Idea of a perfect Game/app I discovered from years of experience that it never existed in any platform/gambling site but existed and played in the ghetto that must be created to satisfy gamblers in a win win situation but I don't know where to start.I have few questions actually but this is what I want to know first.

Let's say for example, I created a game and I want it to be played in a gambling site? like who should I contact?