What we have seen in the last days is everything, but its not a crash. Those were just normal market fluctuations, as we see them every other day in crypto. And certainly Bitcoin wont fall back to 1USD per Bitcoin. Imho it will never fall back to those levels. Besides of that, a price crash like this would not happen within some days, it would take some time to get this low, not everyone would loose confidence in Bitcoin at the same time, so this would certainly be a process of some weeks (if anything like this would happen).