Gambling and investing are two totally different things. Gambling is a game. You can't rely on it to be your source of bitcoin. If i were you, i would not gamble with the bitcoin i have. There is a big risk in that and the chance of loosing is big. That's what gambling is about. Sports betting is a good game. I've tried it and it's awsome especially if you're a fan of sports.
I do not know why some people are thinking that investing and gambling are the same. If you think that by gambling you can get a passive income you are dead wrong. Gambling is for fun. You should invest your Bitcoin and if you really want to gamble then you need to be disciplined to hold a certain amount of bitcoin and gamble the remaining.