It took Darwin an entire book, and that's before the last 150 years of additional scientific work. I can't do it briefly. If you're truly curious, there are numerous books on the subject. You might start here: The Evidence for Human Evolution.
We will, I'm sure, all agree in the process of natural selection and adaptation.
Yes, I'm sure we will.
However ...
Why did I know that was coming?
... many of us have a problem believing humans descended from apes and back to some single-celled something that just randomly appeared somewhere.
That's not quite how the theory goes, but let's continue.
I'm sure you realize many of the fossils found that scientists use to link apes and humans were often a few bones found and much assumed information extrapolated from the find.
No, I didn't realize that.
Scientists certainly feel pressure to arrive at certain conclusions and thus tilt their so-called findings in that direction.
Oh, how terrible!
Honest scientists who consider another way and branded as less expert and are derided by other scientists, which makes more scientists reluctant to explore any other theory. Until science is open to truth, things won't change.
Yeah, it's a rotten deal.
BWAAAAAAAAAAAAAAHAHAHA!
Do you believe your genetic ancestors walked upright?