on Helping Writers become Authors:
If one of your goals as a writer is to be read, then sooner or later you will have to deal with negative reviews of your book.
This could be as simple as a family member or beta reader telling you (tactfully or not) they didn’t like the book.
Or it could be as painful as receiving multiple low-star reviews once the book has been published.
Some of those negative reviews will have merit; some will not.
Regardless, learning how to read them, accept them, and move on is a challenge all writers must face.