Day trade is really better if market capalization is good.But when market going down all coin rate decrease.But it's learning good about trade.day trade really keep increase your skill.A skillful trader get a good profits daily with day trade.If you want to earn money form day trade you must have good skill about trade.
Both is required I think. Without luck, you can be skillful but you can't be successful in the market. Without skill, you can't make correct orders. You lose your capital. And we can result in that we need both of them.
I think skill associated with luck i the reason why there are successful in trading daily because how can be luck if you doesn't know how to predict the exact time and amounts you should trade maybe skills would take place but for the timing when the price and hike is most likely the luck would take place.