What crash? I didn't see any crash, i saw normal fluctuation after the ATH, and then a few days later, a 30% drop in the price (this happens regularly, in case you didn't know), which made some noise on the news and social media thanks to all the greedy noobs who started panicking because they bought at 19k and thought they were going to get rich by Christmas without knowing how BTC and volatility works. The correction caused a major wave of 'panic sells' which made the price drop some more.