If you assume there is no god, you do so without knowing everything which means you could be wrong.
We can posit any god you like as an AXIOM. HOWEver, your (any) god is functionally indistinguishable from NO-god.
You could be right and you can be wrong.
You are only "right" or "wrong" when verifiable facts are revealed.
Up to and until that point, you're merely entertaining a hypothesis.
So, people who say there is no god are making statements they cannot prove.
Your god is functionally indistinguishable from NO-god. There is nothing to "prove".
You may wish there was no god. But there is a god. But you choose to reject Christ from your life.
You may wish there was no Santa Claus. But there is a Santa Claus. But you choose to reject Santa Claus from your life.
Why do you hate Santa Claus so much?
You have no idea what you are missing. Children have faith (in Santa Claus). It seems that you lost your inner faith in eternal principles. Life is full choices. So, as we grow, our trust level can change if we let it in either direction in a variety of ways.
RE: DEISM = ATHEISM