Hi (Placeholder Name),
After skimming through your book, I found it very interesting, especially the idea that one family has all the power. One way your story can improve is to, show not tell. This means is describing your setting and characters. Although it's useful, I think the character introduction chapter shouldn't be there, describe your characters as they appear in the book. This allows for readers to engage their brain, and imagine your story as they read it, it also allows you the flexibility of changing your characters through out the story, and not give spoilers. I would also describe feeling, smell, and hearing, more through out the story, especially when describing the setting, for example, if they're outside, there might be wind, or rustling leaves. Describing things like that help with the giving life to the setting, and give you more ways to describe a situation. For example if you are at the side of the road, writing "the rushing air from the cars rushing by, constantly whipped my hair into my face" tells us that this road is decently busy, whereas if you wrote "the black asphalt stretched in both directions, as dead silence surrounds me" that tells us the road is virtually unused. These are all ways you can use senses other than sight to help describe the feel a setting gives you, and it make things a little more interesting when reading.
One other thing, for some reason I got very fanfiction-y vibes from reading your book, despite having only read fanfictions when editing for writers, which rarely happens, so take this with a grain of salt. This isn't a bad thing, it depends on what tone you're going for. This really confused me, since your book isn't a fanfiction (unless I'm wrong). I think it would help to not use pictures to describe places, and delete unrelated videos at the end of your chapters.
Remember to love what you do, believe in yourself, and be patient, and your book will become amazing. You have my well-wishes and support.
Zuzu