In the case of the Hadza, they hunt with poisoned arrowheads. Hit the animal somewhere and maybe cause only a scratch is enough that the animal will die. The quality of endurance distinguishes humans from animals - this means that the Hadza, after even a small scratch in their game, only have to follow it (sometimes it can take the whole day) to collect the game.
For such a hunt, I don't need a fast bow, a bow with a very high draw weight, a bow shot from horseback, or heavy arrows with tips that can penetrate steel armor in case of doubt.
Just as we only partially know the details and requirements of the Hadza's living conditions, we do not know the living conditions of our ancestors who lived thousands of years ago. We can only guess and speculate based on individual finds that we discover today from that time.
From then until today, the most diverse forms of bows have developed worldwide - only with the introduction and spread of writing are we able to preserve knowledge. The sciences have developed and produced new knowledge. About archery there are myths and legends (Odysseus for example) and since the Middle Ages writings like "Toxophilus" or the original of "Arab Archery". So you can find different types of bows and different shooting styles, some of which have been preserved until today.
With the physics behind the bow, scientists have dealt more closely only in the 20th century and the results are physical (force-distance (draw), speed, energy storage,....).
The human being tends, whether the too big contemporary knowledge, to follow only one strand of infinitely many......