As you well know, proving anything is done by looking at all of the facts to support a given position. So far, every fact points to there not being a god. It’s for those postulating that there is to provide the evidence for their theory.
Which then leads to the question, which god? There are well over 3,000 gods believed around the world today, and anthropologists estimate there have been over 18,000 in history. And yet, despite the huge number, no evidence to support the existence of any of them.
But there doesn’t need to be - at their core all religions are a codified set of values, beliefs and rules that help some people make sense of the world. And that’s fine. You are free to believe :)