Atheists are reasonable people who are able to understand the world that surround them without the need to appeal to magic/mystic.
They have the clear mind to seek reason in order to understand reality.
TLDR, atheists are not lazy people: they use their brain.
No!
Atheists do not believe in god or gods, period!
I know a lot of people who are atheist and they believe in a lot of crazy conspiracy theories, astrology, homeopathy, Feng Shui and a lot of other pseudo-science or New Age bullshit.
Atheism is not the same thing as skepticism.