I've always wanted to write a book, but it’s challenging for people to discover it. It’s like searching for a needle in a haystack. There are literally millions

I've always wanted to write a book, but it’s challenging for people to discover it. It’s like searching for a needle in a haystack. There are literally millions of books out there—who will even notice mine? I believe this is the main issue with OP's book; he needs to find a way to promote its existence. It's a classic business challenge: effective marketing is essential. That’s why publishing companies are so important; they know how to market a book and have the necessary industry contacts. When you self-publish, part of your responsibility is to manage this marketing aspect as well. I understand he started since I know about the book but I’m an unlikely customer. I don’t particularly enjoy sci-fi books, especially random ones. I prefer to know a bit about a book before committing to the hours it will take to read it. My suggestion is to study other self-publishing authors and see how they made their books successful, then model the approach after theirs.