The truth is that there is no trick to slot machines. They provide random results based on set mechanics and it all comes down to luck. With that being said, not all games are the same, so picking the right options is key, and you can still change the size of the bet throughout the session for better results.
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.