I want to add a spoonful of honey to this barrel of tar, where many beginner investors or traders ended up with a huge loss.
Let's break down a harmful piece of advice: ignore the chart and don't use technical analysis, you don't need it!
If you have a lot of money and such a drop, as it was a day ago is a trifle for you - then you can follow this advice and just hold the coins you already bought, buying more on the dip. (Oh, I already needed knowledge of technical analysis! Otherwise, how will you understand that there was a drop?)