Welcome to Atheist Nexus with its 8000 good friends.
A useful group is “ORIGINS” (Origins: Universe, Life, Humans, Evolution, Religion....) with its 125 discussions and numerous video films.
One discussion (over 70 posts) is "Proud to be Atheist".
There's much to feel good about
because atheists and humanists hold the moral high ground—far removed from the superstitious god believers who submit to a narrow-minded controlling clergy with their imaginary heaven and hell. You may be in the proverbial closet a while yet, but you have intellectual superiority when it comes to reasoning.