Hi Shelby,
It's an interesting question and I don't have a complete answer, let alone a quick one.
Whether I believe in God is moot. I certainly don't believe in the Bible OT God. Perhaps the best way I could explain it is that there are much better people than I, and better ones then them, and the "goodness" must come from somewhere. . .
Yet I've had a "spiritual" experience; perhaps best to call it an insight. It greatly helped me at a low point in my life, and still gives me a perspective that helps me grow in tolerance and enjoyment of life.
My present way of explaining it is that we don't know everything; in fact I don't think we know much. We have opinions or belief systems about what we are (physical and/or spiritual) that may or may not be right. Often "spiritual" or "supernatural" are just words to flag that we don't know.
I'm OK with not knowing; that way new viewpoints and discoveries don't faze me.
Retro