Rich snippets do indirectly enhance Search engine optimization. Using a structured knowledge markup with a website by yourself wouldn't Increase the chance of an increased rating in search engine results. So experience free to implement all the beneficial facts and in depth guide regarding how to create the structured knowledge https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html