It is very surprising to see an abrupt change in the trend...

This is what we wait for, I guess. That time has come and I hope I expect a surge in buying demand than panic selling.
The market looks very interesting this time, we never know how long it reaches the bottom. I was thinking of $20k. But I don't think we have to wait for the moment before we buy? No, it is not necessary, it is rather to take this opportunity rather than lose it.