This is by far the most important tip you need to know when playing slots. The machines are completely random and no previous events have any impact on what will happen next.
They’re just designed this way. So if you get advice from someone that you should take a seat at a certain machine that hasn’t paid out in a while because it’s due to pay out, then just ignore it. You should always play on the machines that provide you with the most enjoyment and are within your bankroll to play.