This is what usually happens when you are not a favorite of a particular game. Normally, if we can follow very well on the games we have passion for you would see that the losing rate and percentage will be minimize a bit, but when we go play other games in the name of trying our luck we may win but we don't really knows about them.
Yeah. and you cannot really do anything when you play slots. There is no way to increase the winning chance or anything. But when you bet on sports, you can pick a team when the game is about to end, and you know the possible outcome. I know that any kind of gambling needs luck to win the bet. But still, people can choose where to gamble and they can minimize the chance of losing the bet.
I stopped entertaining myself by playing slots. I don't have that much time to place bets and wait for scatters. I usually buy bonuses when I play them, and most of the time, I do not even get the returns. So, I end up buying more and more and finishing my balance.