There is no such thing as atheism. I have never, in my life, seen someone who proclaims they do not believe in God that weren't so mad at God that they spend their lives attacking a thing that, according to them, does not exist.
Atheists absolutely do believe in God but have hurt feelings because at some point in their lives God answered their prayer in a way that didn't align with what they had hoped for so they are choosing to take their anger out by attacking God.
I do not believe in the Gods of the Asians who inhabited America before Columbus and I do not believe in the Gods of the native African tribes that were worshiped before the arrival of white men - and I have no idea if they still worship, that's why I said it like I did, but I assume that there might be some remote tribes who still do. But, in all cases where I do not believe in the Gods which others worship, I do not make it the focus of my life to criticize or tear down those Gods to the people who believe in them. That's how civilized non-believers act. No, those who make it their life's work to attack God and those who love God are definitely believers.