I, too, have met such positive people in my life who bring good luck.
Apparently OP also belongs to this small group of lucky people. This is of course rare and encountering such a person in life is a good development of events in your life. It is possible, of course, that this is mysticism and superstition. But it is also impossible to completely ignore such a phenomenon, simply because so many people have encountered approximately such a situation in their lives. And this did not necessarily work out in gambling. Luck and good events in the presence of this positive person can occur in all areas of human life. It seems that this person is somehow marked by the highest essence, in other words, marked by God himself.
It make sense that is rare because there are always people around us. Imagine if it applies to all of them? Dang, that would give us an unlimited amount of luck. It is still possible to develop something in your life even without those people and like they say, we should not always rely on luck or play gambling because there is no assurance on them sometimes.
There are those who don't believe on superstitions and when there is a happening, they will only think that is due to their actions. They say that positivity attracts luck. The explanation would be is because when you are positive, you are also confident about your actions i.e. you did a proper research about the team or player that you will bet in, if we are talking about gambling.
There is absolutely nothing to argue about here. Of course, when you are in a positive or joyful mood, your actions in the game will be more risky. But at the same time, these same gaming actions may not be spontaneous and chaotic at all, but on the contrary, they are based on positive thinking and analysis of the situation. And the probability of winning clearly increases. So the people in your environment, about whom we are talking here and who bring good luck, perhaps simply inadvertently and even without knowing it, make you experience positive feelings, which lead to such gaming actions.
I would compare the presence of such people next to you as the presence of a loved one next to you. I think many people understand that when a loved one is next to you, the world looks much more colorful and happy.
In part, approximately the same state can be interpreted in gaming situations in the presence of a person who brings good luck.