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.
Some thinks that investing and gambling are the same because booth have the same concept in which is to bet to a certain thing hoping that they would win or earn. Like gambling, investing is unpredictable too in which many are become a victims of scam and bankrupt then will lost their money. The only different of these two is in investing you have the opportunities to search well before you bet or pour your investment to a certain product while in gambling will always rely on luck no matter how skilled you are.