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 just bet on basketball.
I personally don't think that it makes a whole lot of sense to bet on sports that you aren't even interested in/know the rules of.
That way, you have no chance of having an edge over the rest of the market. And you can't even have fun because half the time you don't have a clue of what's happening. Trust me, I've tried the same before.