It’s going to happen. You’re going to get book reviews that sting.
Some things to consider when you get reviews that have critical content:
Often they will conflict with other reviewers opinions. Why? Because art is subjective.
It’s important to respect the opinions of the reviewer even if they are critical.
But, if you see a pattern in the critical reviews take heed. You can learn and grow from it.
If you see wildly conflicting critique then it is probably just a matter of taste. Brush it off and move on.
Oh, and one last thing. Don’t ever, under any circumstances, argue with the reviewer in public. It’s like committing career suicide.
Not to mention it makes you look like this to potential readers:
Save that for home;)