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.
Reasons why it is said that gambling is about luck is because many times, gambling results are based on unpredictability and the system is designed in a way that it favors the house and with that house edge in place, I only take luck and high probability for anyone to win over the house, so when we use such terms as gambling is based on luck what we mean in reality is the limited chances that the gamblers is presented with and how bad it is to take gambling for ways of making money from the winnings.
Gamble just for the fun, and never expect anything significant from gambling take it for fun and your luck alone can't take you to an advantagues position.