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.
While there are betting strategies for slots and tips to manage your bankroll and potentially increase your chances of winning, there is no strategy that can consistently beat the odds in the long run. Slots are games of chance, and outcomes are random.