Beyond that, playing slots has no strategy. The only variable is your bet in amount and consistency, it's pure math using a random number generator.
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.