Trading is very unpredictable and I think that its risky to do it but on the other hand it stays very profitable for a short term so due to that its also again worth it too.
Yes, of course, trading is unpredictable work, but if we have skills and knowledge than this predictable work give us money, but it is depend on our ability how to earn. Yeah, altcoin trading better is that earn in a short term, than it will be profitable.
Basic knowledge in trading is a requirement for every trader, otherwise you are just gambling when you do it. Skills can be learn along the way as this journey requires you also to develop your method by being updated with the recent happenings in connection to the assets you are trading.
Bear in mind that everything is news related and you must be aware of that news as that is your main weapon to be successful.