It's not wise to try and get even with the casinos because you'll most likely be at the receiving end, so it is best to bow out if you are beating by a casino. I have tried different strategies to be continuously winning in sports bet and the more I try to perfect on them I realized that I was losing more. I used to tell myself that I can get rich through gambling but I later realized that it is better to gamble fun not because it is what I really wanted in gambling but because it gives peace of mind. When you're on a losing streak and you've exhaust your budget it is better to stop, clear your mind and come back another day to try your luck again.
I don't think there's more strategy in sports betting to be profitable. The only thing that I know to be profitable in sports betting is that you should be a picker and analyze the game before betting. If you know the risk on that fight or the game, you shouldn't bet, but if you pick a game that you see as obvious, you can win in your bets. Analyze the game to confirm if your chance of winning is high or not.
There's no other strategy than analyzing the game/fight.
Having a losing streak is really frustrating; that's normal, but if you can't control yourself to avoid chasing losses or revenge bets, then that's not normal.