There are two basic things that need to be implemented when the market suddenly falls like yesterday to make a profit. First, the attitude must remain calm by thinking that it will recover. Second, take the opportunity to buy as many coins as possible, such as top 10 coins.
Small price drops will not affect the trend, but there will be deep declines, breaking the trend. The best way is to trade according to the technical analysis you have determined, set a stop loss to protect your account.
We can buy during the dips, as you said, and quickly get out for short-term profit. Holding an order for a long time can be risky because the market is unpredictable and may fall deeper than we think.