Lots of Sessions and Page Views but to none sales!

Hello, we have been since the end of July. There were few reviews in the beginning. When added to the range of goods, reviews have grown from a few hundred to a few thousand a day. But there is no purchase, no item has been bought so far. Although there are 700-2000 different goods depending on the country, we still do not get sales. There are items that are in Buybox. Maybe someone can help and advise How to increase sales?

Thank you