If your Shopify traffic has plateaued for months, recurring Core Web Vitals...

https://wiki-net.win/index.php/What_Shopify_Handles_for_SEO_by_Default%E2%80%94and_What_It_Doesn%E2%80%99t

If your Shopify traffic has plateaued for months, recurring Core Web Vitals issues or a catalog of thousands of SKUs may make outside SEO help worth considering. But outsourcing is not automatically the answer