However, I wasn't focused on what he was doing; I felt it was all about luck, so personally, I just played slots without paying attention to any particular patterns. So, what about you? Are you one of those people? or are you just a casual player like me? If so, please give your reasons.
You are correct it is just luck. There are no patterns unless your friend is the game developer. Slots are just luck based. And they have been programmed to give random patterns and outcomes. Thinking that there is a pattern will lead to more gambling and more gambling will lead to losses, and chasing the losses, and eventually gambling addiction.