It is pure luck however when you have experience, it do matter but let me get your fact straight. How are you going to use all those experience when you keep on having bad luck? You wont be able to do anything at all with your experience or skill or whatever if you keep on havig bad luck whenever you play , so luck is still going to be the main factor for ga,bling
Depends on what game you are playing, there are few games where you can push your luck like poker and sportsbetting. With a great experience and great knowlege and skills, players with a bad card may win on poker game. But if we are talking about pure luck based game such as dice, so yes luck is the only thing that may make we win.