Is there a module that helps to reward customers for feedback, for example, with the possibility of issuing a coupon or bonus if a person left a review and attached a photo to it or described their experience in detail?

Encouraging customers to give feedback is one of the ways to stimulate activity on the site. To implement such a system, you can use solutions that provide for awarding conditions and integration with bonus systems. An example of such a tool — magento 2 price per customer — allows you to set precise rules: the review must be with a photo, contain a certain amount of text and pass moderation.