There are a lot of players around the world. Not every games are favorite in all region. Some likes soccer, some maybe esports or some cricket or others.
Which one are you mostly placing your bets on? Besides, do you think gambler don't care which sport it is. I have seen gambler who don't have any fucking idea about cricket but he used to bet on cricket.
I gamble on sports focus only football, but even then rarely. Actually, almost all sports I have bet on, it's just that it's an old story that I probably won't touch again. Because I used to be a gambler who would try anything, even though I didn't understand.