As far as i know there is no way you trade in crypto currency without lossing but it can only be reduce to a minimal level if you follow your money management policy and not emotion.
Yes i agree on that anyone can really lose on trading. Trading is a game of patience and if we don't have enoughf patience on the trading feild we Connor really gain on it, we can maybe easily lose than gaining because we don't have enoughf patience to wait for the right time to trade, that is why I believe that we need to trade with a big patience for good.