Edit: Just so everyone knows, a close friend of mine has asked me to trade with some of their money. They have witnessed my trading and know that I am profitable. It is NOT a random person as others have suggested on this thread. Either way this does not matter and I would like to keep the discussion on topic.
Trading with either loan or someone's fund is not adviced especially in this volatile crypto market as the trade could go wrong on any possible level, if you are really a great trader, i believe by now you should have enough capital you can use for your own trade instead of trading for others even if they're are the one that approach you with the offer
This is absolutely true, Using other's money for the risk of trading is not an efficient move since you are being pressured by yourself because you cannot lose the trading activity that you are making, The pressure can possibly make us trade uncomfortably that adds to the chance of losing. If you have the confidence to consider trading other people's money, It would be better to just save up money and start trading on your own capital at least you didn't have to worry about burdens if you lose.