I think at the very first start there is a better chance for you to make more wins than losing (don't forget its a random case) but as you continue to play on the site your chances of winning the house decreases and you will starts losing your money to them, while they make more money you will find it very difficult to win a single game. That's just how it works and you will have to leave to find another one. But some of them are so good that you have no other option than to remain with them and battle it out