Getting a bad review removed from Google isn't always easy, but it is possible...

https://www.bookmarking-presto.win/dealing-with-a-fake-or-unfair-google-review-is-frustrating-but-you-aren-t

Getting a bad review removed from Google isn't always easy, but it is possible if the feedback violates their official policies. While there are no guarantees and outcomes vary, your chances improve significantly when you come prepared