All the signs, however, were there. Like previous bubbles, people were basing their belief in the cryptocurrency on their emotions, not any intrinsic value. Then there was the FOMO element, which only compounded things. Essentially, bitcoin became an international fever. Random companies were “pivoting to blockchain” for no apparent reason other than that it seemed like a way to create buzz. But when the bubble bursts, FOMO turns into fear of losing, which makes for an especially rapid plunge.
It should be noted that crypto prices also started rising more quickly when Donald Trump lost the presidential election, so we should probably have a think about the notion that Trump might actually be Satoshi, and that now with more free time on his hands he is focusing on pumping the market. After all it is highly likely that he is a Japanese-trained quantum physicist (do make sure you get to 2:09 in this for proof of his knowledge of thermodynamics, and to 2:45 for evidence of his reading Japanese):

You should also look out for an email from Robinhood as the company is reaching out to people affected.
The liquidity pool of a crypto exchange is important because it determines what kind of crypto can be exchanged or traded and how much each trade will change the price. The liquidity pool is the total of all of the currency deposited on the exchange by every trader. If this pool is small, then every transaction can have a noticeable effect on the price of the crypto in the exchange. This instability makes it very difficult for a trader to predict how much of each currency they can get at any given time.