Maybe future trade is gambling

I think futures trading is a form of gambling. I saw the last six months report of a younger brother who is very close to me. He knows about crypto from my younger brother. He was taught the holding trade. Meaning, he was given an idea of how to trade on the spot. But he can learn about how to trade futures with the help of YouTube. And without informing my younger brother, he slowly started trading futures. After six months, the condition of his family became very bad. He was born in a middle class family. Later, the area was talking about his loss. I found out from his family that he lost around 14 thousand dollars trading crypto. I told him the last time I saw him to buy bitcoins with all his wealth. But he didn’t hear anything. Later he sold his grandfather’s land and paid off all his loans. Later I came to know from him that he knows about futures trade from YouTube and lost all his dollars by trading without understanding the value of x.

Now my question is futures trade is actually gambling? Or how did he lose all his dollars?