In such case i would always suggest you to go for the trusted gambling site rather than moving onto any such gambling platform offering ponzi schemes. This is not the way gambling goes. Gambling has some certain rules and regulations and also the bets there goes on the demand factor which does not allow them to cheat but any ponzi gambling site which just want to scam their users can fix a match and can get the most out of you.
Untill now i have never came accross any such site so i think that there is no such site offering fixed games and gambles. The gambling should always go loyal because of some terms. You can predict a game before it is been played but you can't actually bet a exact gamble before the game starts.
While the number of gambling games that are fixed is quite low, they still exist with the purpose of scamming gamblers. However, with the enforcement of regulations by governments every step of the way, it's becoming quite difficult for scammers to devise such a move. Now that everything is slowly adapting to the latest trends in technology, we're seeing a wide variety of gambling games to play online. In some cases, there are games which are purely derived by randomness and luck (which are provably fair). But in others, the gambling site owner manages the win ratio himself, making the games completely rigged.
I believe that with the advent of smart contracts and blockchain technology, more gambling games would appear that are provably fair without the inherent risks of a central operator or middleman. Once this becomes a reality, then online gambling games would become fair once and for all, adding greater credibility to serious gamblers. Which means that the future of gambling is online, whereas physical gambling sites would cease to exist in the future. Just my opinion