Theirs no game that doesn't have a primary way of playing it, what I know concerning games is that you most know and understand the primary ways of game, so I believe that each game have its methodology in which you apply in any of them, basically we learn how to bet a game, but for the aspect of slot game I think that I'm still learning how to play slot game, but you can understand it properly when you brought out time to learn its strategies, because what make people to see slot game as a difficult one is when they have not make out time to make research of the game.
You have to stop gambling by relying on the methodology in slot gambling, gamblers already know that slot gambling is regulated with a random winning system so never rely on any strategy to win except luck. I have observed every slot gambling session and I have not found a main strategy to win with the same methodology based on previous wins, we often win when we least expect it and rarely do we win in the main way in slot gambling. So be careful in choosing bets based on strategy because it is very unlikely that you can repeat your winnings with the same game strategy.
The issue with some gamblers is that they do not want to accept the reality of the game, they think one approach can be used to outsmart the system to be winning most times, but the reality is that there is none and there will never be, otherwise, there will not be casinos business anymore, all of them will go bankrupt and no new ones will be encouraged to open the business afterwards. Except for a few systems like the lotto, sports betting etc that have some kind of approach to increase the winning, others rely solely on the luck of the gambler.
This is why an experienced gambler may be gambling 10 times without winning anything or winning a reasonable amount, but in less than 5 minutes, a newbie that has never gambled before could win a sizable bet, this should have pointed to the fact that it is not about your wisdom. There are algorithms working in the casino and these algorithms will never betray the house but always give the house the edge with a little winning advantage given to gamblers to avoid total discouragement. Those gamblers will be the lucky ones who played at the right time the luck is to be shared.