Well at the first place its safer and you can also make more money, gambling is really based on luck and you can than also lose everything at once.
in fact both trading and gambling are risky, but in trading we have a little advantage using your experience, because trading also depend on your previous experience and skill. while gambling depend on your luck and there is very little role of your skill and experience in gambling.
things make trading better is when you don't have to rely on luck only not just like gambling.
most games in gambling required luck to win it , it is useless to use strategy or having experience.
no wonder why people prefer to go trading instead to gamble.
In gambling, no strategy will work forever because most of the games results are based on luck. So don't think that you can make money if you have a strategy or experience. These games are just for our entertainment so you should go to gambling only if you want to get fun. And in trading, you need to have an experience otherwise it is similar to gambling. So first you should learn basics and then only invest in trading.