for me , Trading is more likely to be skill ( Knowledge , and experience ) than luck. luck for sure is important in trading but when you study the market you would make sure to not take an emotional steps , you would take strong studied steps
Yes for sure trading will imp[rove with time but you will have to get a lot of knowledge about it, if you want to earn with bitcoin trading then try to improve your skills about bitcoin, day trading has a bit risk so we will have to rely on our own skills, if we will use our knowledge for right thing then we will not lose anything but gradually our income will increase more and more, so try it, if you are skills and you know how to deal with the situations.