Does knowing Charles Darwin married his first cousin change your opinion of his theories on evolution?

We were all from at one point since there were only a few humans at first. (not adam and eve). All humans originated from Africa. I believe in evolution. Nat Geo says africans travelled to other places in search of food. Since the seas in the past are shallow (most were still ice caps), they were able to waddle past the seas. Then they settled down in different places. People in colder countries like canada, usa have fairer skin and people in southeast Asia and Africa were darker because of the hot sun, dark skin has natural pigment. Their noses and features also changes due to something ( I forgot). That's evolution. Evolution is real