The Bible says Eve “would become the mother of all the living“. I take that to mean that everyone who has ever lived, or ever will live, is a descendant of Eve.
But the Bible also says there was a guy named Melchizedek who had no ancestors at all. He was “without father or mother, without genealogy, without beginning of days or end of life”. If that’s true, he certainly didn’t descend from Eve. He didn’t descend from anybody!
Oh, and there’s also Adam. He didn’t descend from Eve either.
Those people never lived.