For me I don't believe gambling will always depend on luck but sometimes. If you always depend on luck with your thinking everything will be useless then. You need also knowledge and skill to perform the luck that you have. I you really want to play a gamble with pure luck only go for lottery there is no skill required just pick a random numbers needed to play that game.
but to me i have 100% believe on luck, to me luck is one of the most important element of success in all kind of investment, trading and gambling, first your must be luck and after that your skill and experience can work for you, as most of the luck person are superior that skillful and experience peopled. therefore to me luck is the important element of success.