Use the five-spin slot strategy to play up to five spins at various slot machines. It's time to move on to the next machine if you receive non-0 wins. With the five-spin slot strategy, you are simply trying to get a taste of several machines rather than trying to win multiple times on one particular machine.
No, there is no way to predict when a slot machine is going to hit a jackpot or to determine which machine is going to be lucky. Slot machines are programmed to use a random number generator (RNG) to determine the outcome of each spin, and the RNG generates random and unpredictable results.