I've published 44 children's illustrated books on Amazon, have a website, socials... all to no avail. I mean, everything is against you on Amazon: Self published books are too expensive, profit margin dismal, to get in the top 10 of a niche is a catch 22... About to go with digital narrated downloads on Fourthwall with Genially puzzles and quiz add on. The return is higher, the cost to the consumer a quarter of a book price. A win-win? I hope.