Wrong.Atheism is not a lack of belief.
Wrong.It is a belief.
It includes the lack.To define atheism as a lack of belief is incorrect.
It has. And the main problem is that you won't accept any definition other than your own.This has already been discussed comprehensively many many many many times.
Wrong.People who lack the belief in God or about God are not atheists unless they also believe there is no God.
So what do they think?Those who lack the belief do not, by necessity, consider the universe as Godless.
How CAN they consider there is a god if they lack belief?
That's 100% true. If we agree with your personal definition and yours only.It is nonsensical and completely pointless to define them as atheists or Godless.