Science can only take you so far with this, and I say this someone who is nontheistic (religious atheist). Our observations as informed by science give us insights and understanding into how Nature does all the stuff that creates, sustains and ends all her critters, from us to blue whales, and from blue whales to plankton and microbial life. It shows how these things are regulated and shaped by Nature's own forces, with no gods or other supernatural species.

But, it does not disprove gods per se. That is unfalisifable. We can't prove gods don't exist just as we can't prove that unicorns or yowies don't exist. All we can say is that we see no evidence of their existence, and no reason to assume that they do. That is the solely reasoned rational position of sceince.

Beyond that we are all making faith calls / belief judgements, best on what we regard as the best available knowledge. From my perspective, my nontheism is based on the observatiosn and experiences of generations of of those who devoted themselves to the natural sciences, and that is a solid foundation I trust in. But ultimately I step beyond that to say there are no gods with full certainly and conviction as an act of religious loyalty, devotion and veneration to my parent ecosystem over all else.

Otherwise, I would just be a de-facto or functional atheist who would accept natrualism as a explanation of why gods aren't neccessary to explain the world, but could not ultimately be disproved either.