For me if the price dumped I will buy some coins to hodl and if the price pump I will sell or trade it. If the price dump it is the right time to buy and you should know when is the right time to buy and trade or sell your coin cause if you buy it at pump you will not double your investment. You should have some strategy in investing in the crypto industry so that if you invest you will earn big profit. You should also look first on the good coins so that if you invest you will earn big.