You have to understand that you are doing "gambling" where you can't expect a 100% winning rate for every of your session.

Stop this mindset of yours that you feel cheated whenever you are losing. It's just unfortunate that you lose that particular session.

If you feel like casinos are cheating you, simply stop gambling. The moment you have now understood that losing is part of the game, and the casino is not really cheating on you, then come back again and try to make an attempt to find your luck.