At the end of the day it's all about getting lucky, there are gamblers that focus on just the same pattern and they keep repeating it then there also gamblers like yourself that changes the games they gamble on, sometimes exploring can lead you to something profitable. Whichever pattern you decide to follow the most important thing is risk management, this is what is going to reduce the losses you incur
It's just like you rightly stated, it just all about getting lucky and mostly not about whichever strategy you choose to approach gambling with. Not like the strategy isn't needed or important, it is, but the truth is that gambling can be very unpredictable and you just never know when you'll make that big win. You could be using same strategy with someone and win more frequently than that person or vice versa, and then you might wanna ask why it's like that, inasmuch as your strategy may potentially give you an edge or increase your chances of winning, the fact still remains that in the long run, only luck may guarantee that win and realizing and acknowledging this fact would potentially help a gambler to set realistic expectations and also help them make more informed decisions.