first of all this picture only shows that the thing you are calling "Crash" has already happened and now it is over. as you can see price is in the process of recovering from that crash and coming back to real price levels of $14000-$15000.

and I get that it looks scary if you have never seen something like that. but if you simply pan to the left side of that chart and look at the history a little bit you can see the same exact thing happening over and over. you see this is not the first time price has dropped more than 30% after a major rise! and it won't be the last.