Can someone check out my product or even give me some tips

I’m a 16 year old who made a unique product and that is… school books. Some might be confused but to explain, it’s like math, science, English and etc books.

I know no one will be interested but getting one sale will actually make me so happy. I only got 2 sales and I started my business 5 months ago. Also btw I wanted to mention that making the book took me 2+ months since I wrote it all by myself and I’m working on more books

https://amzn.eu/d/47rW5Vg