I rarely play different casino games but I prefer to bet on most sports in the casino. According to you if you play the same game over and over again in a casino the winnings may be less but how can that be. A game will basically depend on your strategy like I do sports batting so I have to analyze and figure out which team is strong and which team is weak. Now suppose if I don't have the good skills to field a strong team then surely but I will be defeated in that match. It may be that you are changing games regularly in the casino and you are getting good results in some games. If casino companies were doing this to users then maybe there would be posts on social media or other platforms about these things but I haven't seen a lot of posts like this.