There is no evidence they did not and and plenty of
biological evidence they do.
You are the one moving the goal posts. Abiogenesis is a totally separate science from evolution. Evolution only begins once live already exists.
Probably because amoebas DID
NOT BECOME HUMAN. They do share a common ancestor that lived over a billion years ago.
Well one of us doesn't and, spoiler alert, it is not me. Evolution is an accepted scientific fact on par with gravity. Darwin was 100% behind the fact of descent from a common ancestor, AKA, evolution. What Darwin proposed was a mechanism, natural selection, to explain HOW evolution operates.