Do you think that if you write a review about a product as if it has 100% perfection, then people will buy?
Then sorry! People are less likely to buy especially from the top developed countries.
According to research, people love to read mixed reviews about a product: negative and positive.
In this way, it seems the product genuine. A product review with no error creates a fake perception.
It can be applied to courses you take, the products you wanna buy, and a car you wanna purchase