Apart from dice that it outcome can easily be predicted
It sounds like you're very certain to win since it can be easily predicted. If thats the case why many gamblers are losing their money by playing Dice?
There's no guaranteed forecast and slots are designed to make you lose in the long run if you are trying to make money out of slots you'll be disappointed, forget about what you see in advertising where a guy wins a jackpot in a slot machine, it can happen but that does not mean it can happen to you, it's hard to manipulate the outcome, compared to dice where you can always change your setting and could change the course of the game.
Indeed, slot is a luck based game and strategy and skills are not necessary to win. Hence if you dont want to play games that are more on luck then you can choose other games that you can come up for strategy to maximize your chances to win.