Does your belief system depend on the notion of a God (or gods)?

No, it does not.

Whether one (or more) exists or not isn’t pertinent. It—neither the idea nor the entity—isn’t relevant. It isn’t worth a scrap. It isn’t substantial. Nothing in my construct rests on such an insecure foundation. Forget about he, she or it, at least for the duration. I would suggest that you build out from the centre of the universe initially. From solid ground. From the space between your eyes and ears. Start with what you know. Know thyself.