Actually, this is really true that in sports games there is a good possibility if a gambler has good knowledge about sports and analyzes it accordingly and then places a bet, while slot games on the other hand depend entirely on luck.
Sportsbook gambling isn’t completely focused on luck, it does give room for those who know the game or sports to predict just what’s to expect as possible outcomes of a game. You have historical data as per head to head, the grounds on which the game would be played, winning streak, what’s happening on the table, fixtures ahead, what league is the teams participating in and many more. All these statistics helps you to make better predictions and brings you closely to luck and wins.