I just can't believe you think the bible is 100% true
I mean I'm sure you believe you believe that, but I can't imagine you've really thought about it, it's so clearly mostly allegory. Do you believe God was defeated by chariots made of iron? That he was worried a tall tower would reach up to him in heaven?
Once you start learning about science and the scientific evidence for the history of life and the Earth and the universe, the Genesis creation account is a obviously literal as God being defeated by chariots made of iron.
And there are many many missing links between all the major families of life, showing them converging into basal forms in the past. Most people would call them transitional forms, and the term 'missing link' is specifically referring to human evolution, from the late 1850's before we'd discovered any. We now have many thousands of specimens of proto humans, mapping out at least a dozen distinct subgroups. You've probably heard of some, like all the kinds of Australopithecus.
We have the fossils you think we'd need to confirm evolution
And we've confirmed it via other methods too, like genetics.
But most importantly, evolution ISN'T atheism!
God AND evolution are true, Genesis just isn't literal