Game app

Good afternoon together.

As a game designer, I have developed only one card game, which is to be launched as an app in the first phase. In the second phase, the actual card game will go on sale.
Since I do not want to go through game publishers in this case, the product is too high quality, I am looking for someone in the form of a participation.
It will certainly be worth it for both sides and I am highly motivated to move big.

I appreciate your addresses.
No "credit intermediaries" please;)