A coordinated wave of fake reviews can drop your Google rating from a 4.6 to a...

https://stateofseo.com/my-product-went-from-4-6-to-4-1-stars-in-three-weeks-what-do-i-do/

A coordinated wave of fake reviews can drop your Google rating from a 4.6 to a 4.1 in hours, and the damage to your local search ranking is immediate