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, trading is risk-taking, there is not any 100% winning. In my opinion, if you want to take the lowest risk possible, invest in the two leading CMC coin markets, ETH and BTC, which will make you profitable and safe to say. 99%. As long as you hold the patience, they will make a profit in the future for you.