Well… most people are like that, but it is practically impossible to win. Nothing in this world is instantaneous and everything requires a long process, there needs to be sufficient knowledge and skills and of course there must be sacrifice in it to be able to get victory. Even instant noodles we have to cook first so we can eat it.
Just let them realize it thru their experience. Even giving them such friendly advice, they won't feel the actual pressure.
Once they now feel the real experience, they will truly understand what's the best thing to do.
It's just that Future trading is really technical even for a crypto-enthusiast. It's not that easy to understand. While in gambling, these people will just place their bet and watch the result without doing nothing. Believe me, even we show these people huge money came from trading, they won't bother to know as the interest is not there.