I suggest you not to trade using their money because you already know that we cannot always expect to make a profit from crypto trading, especially we are still at the bear market. It's better to teach them about trading and trade together in one room, so they can learn directly from you than to use their money to trade. The risk is not worth trying because if the market is going down without any sign to rise, it will be hard to give them the money. After all, your trading does not help you to make a profit. But we can only suggest to you, and the rest will be up to you.