In futures trading, whales suddenly lower the price of the coin and most traders liquidate, others think the coin is bad and remove it from their lists. At this time, whales re-collect from the low price and when the coin starts to rise, everyone opens a long position. When it rises a little, whales again sell the coin they bought cheaply in parts at a high price. As a result, the coin falls again, but the whale wins. You get angry because you lost and think the coin is garbage. Therefore, make a list of coins that interest you and follow them every day. Buy at the bottom during a sharp decline, sell when it rises a little and take your profit. Don't let the whale sell before you. In short, don't be greedy. Be content with what you have earned. It is impossible to earn without suffering.