The most important technical SEO factors for eCommerce websites are site speed, image optimisation, URL structure, XML sitemaps, and mobile-friendliness.

If you want to ensure your faceted navigation doesn’t create SEO problems, then avoid duplicate content by canonicalizing filtered pages, using no index tags, and carefully structuring URLs.

Structured data helps search engines understand your products by making use of schema markup to show rich snippets, improving click-through rates.

If you want to fix this, make sure that there are fast loading times, a responsive design, and easy navigation on mobile devices to enhance search rankings and user experience.