Exactly, people are very keen to make a profit on every trade they place, but sometime we have to face challenges even though we are very experienced. Based on the market situation we should always implement different strategies in order to overcome our loss. That's why we should always monitor the market and based on that we should act.
That makes some people are greedy to chase the profit even if they know that the current market still unpredictable. They forgot that the market could move anywhere, even if they already make a prediction. The market situations will always change every day, and if we don't analyze to make a prediction, we cannot get a low price to buy. Risk management will be a must that we should have to prevent the loss, so we can always remember that we need to follow the market moves.
Cryptocurrency markets are most unpredictable. Their high volatility nature can make them move in any direction in huge volume. A lot of people usually go for panic sell once they start seeing the price going in opposite direction with huge volume. This is where they have to face excess loss.
A proper risk management would never allow you to panic sell your coins. Instead setting a stop-loss would only give you minimum loss even if you failed to predict the further movement of the charts. We can see that BTC markets move across $500 - $1000 in a single day and that can be dangerous sometimes as the price might quickly move in negative direction in just few minutes if you fail to speculate the graph continuously. At this time, stop-loss would be a life saver.