I mean, I would like to believe humans built it exclusively, but I think there is far more to the story than that. No one knows with any real certainty how they were actually built or for what exact purpose.
The really boggling fact is that Egypt isnt the only place that harbors pyramids, they have found them on nearly every continent. Why? Even more staggering is that most of these civilizations didnt even know of the others existence when said pyramids were built.
The Egyptian ones obviously offer the most mystery for scientist and archeologists to this very day.
https://eps.leeds.ac.uk/mechanical-...t-opening-a-window-on-an-ancient-civilisation
People obviously love to come to their own "expert" conclusions, but when real actual expert minds are boggled for the most part, we should all definitely look at it as openly as possible.
Modern humans natural insticts are unfortunately to fear the unkown and put a clear stamp as to the hows and whys of things to make it easily digestable.
Ancient Egyptians seemed to have studied consellations and were more in tune with "the other realm". You could see how God fearing folk through history would balk at these notions and pawn it off as utter bs.