It is really hard to predict the perfect down of the market. Each and every price can be considered as the right one to enter the market. If we were able to enter at the perfect down the time to experience the profit gets lowered. If one enters the market at the top, automatically it'll make the user hold for a long to experience the profit. Rather than looking for an entry, I suggest users to develop the minds to have patience with which it is possible to overcome any sort of market downturn.
It is impossible for everyone to buy at the bottom as when everyone start buying the rates go up. So no need of trying to predict the lowest point. It is okay not to buy at the high and when you have opportunity. Bitcoin someday will go up, so just no need to hurry.
Technically your right. We don't need to hit the lowest bottom to buy some bitcoin. As long as we catch the dump before the upward trend, I can personally consider it as buying at the bottom. I will be happy even if I catch a BTC dump even it's $500 more than the lowest price as long as the market will go uptrend. I haven't hit the exact dump price in my whole crypto experience, I always place myself at my buy zone. As long as it's hit, I'm pretty happy with it.
I have newbie friends that thinks like they need to hit the rock bottom price, This is why I assume that they strive for bigger profit. And yeah I told them that it is very hard to catch, I just told them to be happy with the profit they can get with their entry point.