This is more than a correction, it's a pure dump who bought earlier thinking that bitcoin will have more pump. If it was a correction, it would be more slower than it is now.
There is no need to worry so much and take the latest market changes as the dump. It is a slight correction. Cryptocurrencies jumped too high, and they made it too fast. therefore, the situation that can be seen now was expected.
let us wait for a couple of weeks and watch how altcoins and Bitcoin are coming to more stable prices. As for me, it is not better to sell anything right now.