For the record (and people who don't want to look it up), the way people typically win at sports betting is through arbitrage, not "betting smart", "being lucky", or personal restraint. What this means is that they identify a discrepancy across several services where the expected return for making opposite bets is higher than the losses for certain values of bets, and they make those bets, so they win regardless of the outcome. You do get banned for this if they figure out that you're doing it, but it's extremely safe if you don't get caught and do your math right. Similar strategies are used on the stock market to guarantee returns within certain bounds of behavior.
You CANNOT do this with casino games. They are specifically designed to prevent any scenario where clever betting would lead to an elimination of house edge, let alone the creation of a better's edge. Whatever you think you might be doing to win big and consistently, it does have a breaking point, and when you find it you will lose. For fuck's sake, just watch bossman lose money and get your kicks there, you don't need to spend it yourself.