In my opinion making cash from gambling is not a good option and the statistical probability that you will win every game at every casino is very low. I think winning or losing every game is completely in your head, so your individual tricks are not there. However, we all have some kind of luck so we should strive for what is possible for us.
I see this post all encompassing and you've made an impression and given a lesson. It's left for those who are lucky or who have "luck-charms" to continue in their gambling as source of earning and those who don't have such lucks from overtime gambling experience to continue or stop respectively. So I'll say from your post , lesson gained!