It depends on the point of view and interest in the end because after all slots and sportsbetting have their own interests and I think when it comes to fun (when we win) the interest will remain the same where we will be very happy with it regardless of the game.
In terms of slot wins, it sometimes provides an unexpected condition compared to sportsbetting because in sportsbetting it focuses more on the odds that have been set but in the end in this context it doesn't become a race I think considering that slots are unpredictable where when we expect a batter who can multiply profits by a lot it could happen with a small ratio compared to sportsbetting which has more probability because it depends on our understanding of reading the game, statistics even though plus a little luck but for sportsbetting the probability in terms of our confidence can be much greater than slots when we play (gambling).
You can play games on gambling sites and feel happy only if you are gambling responsibly that requires many things. You must start off with your good financial management so that you don't and won't use all your money or most of your money for gambling. With a controlled gambling capital, that needs to be very small part of your capital, you can have better chance to control your actions and gamble responsibly.
Then when you make your bets, you must control how much fund you use for gamble daily, and how many bets you make daily. It's hard to do with newbies and even many senior gamblers but it's vital to survive in gambling. Because if you fail to control those actions, you can over gamble and lose a lot of money with either sport bets or slot games.