… Bet a single coin until you see the reels wiggle, then bet the max because the wiggle means a jackpot is coming. This is why a slot machine can never be said to be “due” to hit a jackpot.
No one looking at the slot machine can predict the number it will choose next.
Just like with roulette or other games, the house always has an edge. In fact, you may end up losing more often than winning regardless of how you play.