So Bitcoin just crashed to 6200 $ , around 1000 $ 1 hour , around 15 % in 1 h , what is going on ? 
Actually, you are happy with the current price of Bitcoin, you can buy it and invest at a cheap price like this, the phenomenon of crypto going up and down is one thing that is commonplace and there is no need to panic.Yes, corona if it is linked to the main factor but it is not one hundred percent true there are other factors that we don't know affect crypto prices on the market today, you need to think about buying and storing crypto assets 1 and 2 years will come and see the results, you will be surprised when you see it.
Yoshie buying now at this low prices is one positive thing we can do in this stressful times. Corona is everywhere, on TV, internet,
and looks like Corona is to blame for everything bad that is happening. Personally I think something deeper is going on here, but time
will tell what really happened.
I agree with you that people who invest now should think about holding assets for years before they sell for profit. We can't predict
when we will see the end of this, but it can last for months, and recovery from this can last for years.