Atheists do not believe in gods. That's it. Atheism has nothing to do with science and vice versa. Evolution is science and is accepted by theists and atheists alike, including all the mainstream Christian churches, because the evidence for it is overwhelming.
You seem to know as much about thermodynamics and entropy as you do about evolution - nothing at all. This mean you are either ignorant or stupid. Never fear, if it is ignorance, that can be cured by education which, with any luck, you will get when you start High School. Stupidity, alas, cannot be cured, you'll just have to live with it.