Customers should be given the opportunity to offer reviews on a product or service.
We all love Don Draper, but your online store doesn’t need him
Billy Robins

Alternatively, you could try to be proactive and search for reviews that already exist on social media about the products you’re selling (e.g. review videos, Instagram photos etc). Sharing with customers reviews that originate outside of your site can be a helpful tactic to build trust.