we will follow your thinking and we will all stop buying bitcoin and we will stop selling bitcoins, how do you think the market would look? the market would stop. there will always be someone who is keen to buy and there will always be someone who is keen to sell. You can see this in real life.
The decision would only rely on our hands.
We can sell or buy no matter what the market situation is but the best thing to do is to handle our emotions well. Most people who have accumulated bitcoin will surely sell their coins because they're afraid of the possible downfall of the market again but if we're a crypto enthusiast, panicking has no place for us.
I think according to the OP said when you have to be calm in determining the choice to buy or sell does not mean you have to stop to sell and buy. what is meant by OP is you have to be calm, don't include emotions in making choices, and don't panic. You have to organize it well, you have to research the market, because it could be after that the price rises again, like today.