What would motivate you to leave a negative review about a restaurant?

trying to figure this one out , this restaurant i go to in hometown seemed to get a lot of negative reviews this summer ( like 1 star some even said they leave 0 if possible they were that unhappy ) , sure there were a lot of positive ones too but seems to be a lot of customers who left unhappy this summer more than other years.

like what would actually motivate someone to leave a negative review? instead of trying to talk to management afterwords to address there concerns with the business and service

What would motivate you to leave a negative review about a restaurant?
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