Hello everyone, I hope you are well.
I came to bring a case that happened in Brazil, an investor wanted to get rid of his bitcoins at the Novadax cryptocurrency brokerage (I've never used it, I can't recommend it, I'm just bringing the news). The fact is that he went to sell 1.7 BTC and generated a market sell order, with the lack of liquidity his orders were executed and consumed the entire order book taking the price to practically zero. He had bitcoins sold at 238 USD.
A huge loss just for not paying attention to selling at the price of the day, maybe he wanted to execute the orders quickly, or he didn't know what he was doing.
So be warned, if you are going to sell, fill out your order correctly at the price you want to sell, never use the "market" price to sell a large amount of bitcoins.