I have been trading since last year and have learned so many habits;
If your stop loss is not set, this unexpected massive drop will result in my entry becoming liquidated. Fortunately, I had set my stop loss and it was triggered. As a result, my losses were not too big.
Also useful is a fundamental analysis. If there are positive or negative news, you can also predict which way bitcoin will go.
Keep to your own TA.
There is a proper point of entry and exit. I have proven multiple times that following hype and volume will not bring any good to our trades.