This only applies at card games right? Also especially on a real casino, I simply do not believe that most of the games here on online casinos requires skills to be played and also to win it.
Card games I think will also require luck. Good cards would give you the win and if you are not that lucky enough, you would lose the game, as simple as that. This only shows how huge luck is, as a factor in gambling. There would be days wherein the game would be in favor to the player, and days that it won't. So just enjoy your experience.
Not. All the time, for it also depends on how good you are on bluffing with the cards on your hands.