Hey, It is funny to play roulette and other games in GTA, but in my opinion if you want to understand, to feel what gambling is, you should play on a real Casino. Even an online one, as W88 is. Where you can get an adrenaline dose, without risking your life as others do practicing extreme sports. I mean that it is a safe way to spend your free time and to have some new feelings. You should just understand that it is a game , not a way of making money. I play 2 times a week since 2018, and it is how I relax myself in weekends after work, and since 2018 I won for about 500$ in blackjack. You can try it too.