Trading is more risky because you cannot know everything happening in the market. Skill gambling like poker you know everything before taking a decision and this is less risky. They are both risky and they are not recommended. Usually people who play skill gambling have less losses than the other ones.
At the moment market is very risky how crashing every day so trading seems more risky because much hard to know what is happening there. Skilled base gambling has some chance to win and poker is looking best option to play. I am agreed with you buddy.