No, there are no surefire ways to win at slot machines. These games are based on random chance, with each spin being independent of the one before it. Because it is difficult to foresee or manipulate outcomes, the best strategy is to play for fun and set a budget to avoid financial losses.
Always choose an online slot machine game with an RTP of 96% or above. This is the best slots strategy to follow every time you play since a high payback percentage indicates that you have a better chance to win a spin.