Absolutely yes, the main strategy in the market is to invest when the market price is currently dumping and sell it again in order to earn more profit, buying and selling will make you rich in just a few months.
Well it's not as easy as it looks, to be honest even I had same thoughts but you have to research the market condition before doing so, sometimes we end up buying assuming the market has just started to pump but end up losing the money because the pump might be temporary.