I think slots and craps strategies are just luck the strategy you can apply to slots is to try not to lose too much money and know when you might get lucky to raise the bet a little, because when you win on slots, the bet multiplies to a significant amount.
Crap, for me, is almost addictive, but you still have to manage your money very well, otherwise you'll waste it, and if you use a trick, you'll lose it faster than you can. It's happened to me.
If every gambler knew exactly when they would get lucky, all gambling platforms would have gone bankrupt long ago. In reality, the opposite is true: regular gamblers often go broke trying to find that one winning strategy, while gambling platforms continue to grow richer.