You won't even think about trading under pressure if you are learning to trade the right way. You cannot trade under pressure if you read trading books, have mentors, be a part of peer group of traders. The people who are likely to trade under pressure are those who are greedy and want to make it a get rich schemes. Trading for them is short term and not a long term endeavor.
Trading requires a lot of analysis and a lot of market research. Because crypto is very volatile, when will the price of a coin decrease or increase? What kind of news can affect a coin? After analyzing all this, you have to trade a coin. When someone is under mental pressure, he will not be able to use his brain for these things, due to which he will invest in the wrong coin at the wrong time. So, of course, he should never trade under pressure if he cares about money. If you trade under mental pressure, there is a higher chance of losing.