I don't understand why anyone would participate in gambling if the prize is not guaranteed. But that's what the cameras want. After all, what's the point of promising someone a prize if you can say there is a chance to win a prize? And then everyone will participate, even if most of them end up without a prize.
It is not guaranteed because it is a game, and in games, we either win or lose. Gambling is a game of luck that can't be predicted. Gambling is always a game that is not certain, so I advise gamblers to wager only the amount they can afford to lose because gambling a large amount does not make winning easier or guarantee success. This is a game that gamblers need to understand very well; most people who don't understand gambling often do it the wrong way, such as poor bankroll management and seeing gambling as a hustle to make money. It is never guaranteed—just play and take your leave.