Just as I said in #11 ─ but here it is again:
Following an idea of Descartes, though with variations, I assume that ─
a world exists external to me
my senses are capable of informing me about that world
reason is a valid tool
and I assume those things because in each case I can't demonstrate it's correct without first assuming it's correct. However, anyone who posts here affirms by so doing that they agree with the first two, and fingers crossed they also agree with the third ─ so our conversations have a common basis. Indeed, I've yet to meet anyone who doesn't, explicitly or implicitly, agree.
That is, you share those assumptions, as your actions and words in posting here show. If you don't, please state which ones you deny.
So science sets out to explore, describe, and seek to explain the world external to the self, aka nature. And the vindication of science ─ as with all forms of reasoned skeptical enquiry ─ is that it works better than any other system we presently know of.
That's to say, there's a world external to the self, and we know about it through our senses, and it's also called nature, and reality, and it's where things with objective existence are found, not least your parents, air, water, food, shelter, society &c.
And it turns out that we find nothing supernatural in nature. The only manner in which the supernatural exists is as sets of concepts and imagined things in individual brains. And because these ─ unlike eg science ─ have no objective standard of truth, there are, for example, tens of thousands of versions of Christianity, and Christianity is only one of the world's thousands of religions.
If any of that is unclear to you, just ask.