In a philosophical sense atheism is at ground a rejection of supernatural entities as informative principles

I wasn't prone to proselytizing the fact I was an atheist.

How do we act, right now, in the moment, to embody what we believe, and act on those to make things right and good again. And what is the Right and the Good?

Religions can inspire philanthropy and great art, or heretic hunting and ignorance.

If the god(s) are moral and nice, why do they allow things that aren't moral or nice?

The sound secular position is that governments ought to have no power to coerce belief, or enforce lack of it. That was the principle on which our Republic was founded, and it ought to be the model for all the earth.