I personally believe that it should be noted that it rarely goes down under but at the same time it should be noted that it could rearrange depending on how big of a crash happens. Like when it goes from 35k to 30k then it could tell you the reality and you could see what it should be doing, but when it goes from 60k to 40k, it doesn't show exactly what you are looking for and it will look like a buy chance all throughout.
Hence, there is nothing wrong with the current situation and we should be feeling fine about not buying if we want to wait a bit more. Or just put price in your mind, I will buy if it goes to 25k, and I will buy if it reaches 33k as well, and be ready for all possibilities.
This is the part where people talk about how crypto is something that is unexpected and TA we do is usually what crypto "should" do and not what it does. Of course there could be situations where it doesn't do what it should, but at least you would know what it should do and arrange yourself accordingly.
This is a method where people would generally use to make sure that they are doing the right thing and that means that if you also defend yourself against unexpected stuff (with stop loss or similar stuff) then you should be fine. I believe that best we could do right now is invest into bitcoin small by small and it would help you out. But also have a stop loss planned as well.