Is this self-pubbed? Librarians won't buy an unknown's self-pubbed book. You only have one serious option: Buy Facebook or Amazon ads aimed at the parents. And your family/friends are right. DON'T let them buy your book off Amazon. It hurts you in the algos if family/friends buy, especially at first. It's rather technical to explain why & would take a whole article to explain, but if you want to hear it, let me know & I'll write it up and tag you later.