Yes, Not all gambling game is base on luck. you can also use your knowledge in gambling, and I think you also need strategy for this. and If you have that two then I think you are lesser in loosing. Winning is the best feeling at all. But also always think not all the time you are a winner and You must know when to continue or to stop in playing gambling.
I feel as if most gambling games are just pure luck. Sports betting is not so much pure luck because you can predict the game by how good the team plays, player's performance. Most gambling is just luck in my eyes.