It is good to replace the gambling field by trading, because trading is really less risky than gambling, despite that both are risky of course. In the trading world, you can minimize the risks by getting more knowledge about the market, the studying of charts, choosing the most profitable coins to trade and so on. In gambling, you depend only on luck, and you can't reduce the high risk of losing.
yes gambling is zero or hero , but if our trading is correct we will never come to zero and we will not depend on our luck also our analysis is which gives us confident while in gambling we depend on hopes and luck