There are a lot "writing advice" books out there. This is largely because there are a lot of mid-list authors who decide to diversify by writing them.
This is not necessarily a bad thing. These books can often be helpful to beginners. However, the sheer volume of them sometimes makes it difficult to separate the wheat from the chaff.
In response to a tangentially related question from one of my YouTube subscribers, I recently discussed the writing books of Donald Maass. Of all the books in this genre, these are the ones that I most strongly recommend.
Maass isn't a novelist. But he does own a literary agency; and this arguably gives him an even better perspective on the elements that constitute a "break-out" novel.
Maass largely skips the basics on plotting, etc., preferring to focus on the deeper qualities that make a work of fiction competitive in a crowded marketplace. I suggest buying all three books in the video below. If you write fiction, you'll want to read each of these at least twice.