I think a shop owner should make money with kindness. Since that person gave you a bad review, you should contact that person, sincerely invite him to have a meal, and then ask him to give you valuable advice on your shop and your service. Whether that person can accept your invitation to dinner or not, as long as he can make suggestions, you can make improvements according to others' opinions. So your shop will get more and more popular.

If people give you bad reviews, you can sue them. After a long time, others will know, and gradually fewer people will buy things from your store. If no one buys things from your store, your business will be impossible.