Sure hints would be good and much appreciated! When you say "our diet doesn't look like a herbivore/fruit eater at all", I see tables like this [1] and it would strongly suggest the opposite. Maybe it's propaganda... I don't know, I should like to see something like a ScienceBrief on it.

In terms of the last thing you said. You phrased it as "australopithecus ate meat"; it seems they predominantly were herbivorous according to wikipedia[2]. Which doesn't preclude eating meat, but could easily be misinterpreted from the way you put it.

[1] https://livinontheveg.com/wp-content/uploads/2017/02/compara... [2] https://en.wikipedia.org/wiki/Australopithecus#Diet