I think it's simple, buy the coin at the same price, after she grew to the proper price, sell it.
all the concepts applied in the two trades are indeed like ways to make a profit. but the crypto market is not that simple, it needs more ability to get profit especially with the market conditions that are now weak. we cannot just wait for our assets to rise, or even continue to decline. rather than just holding assets we can trade with the daily, and that can help you from impatience in waiting for the market.