What to fix first on a failing product page
Fix in reading order. First, the first screen: product, benefit, and next step, obvious in seconds. Second, the gallery on a real phone. Third, the copy order: benefit, proof, objection handling, offer. Fourth, the buy box: price logic, shipping visibility, and a button that never disappears on mobile. Fifth, trust placement near the decision, not in the footer.
If several product pages fail the same way, the problem is systemic, and a template-level Shopify product page optimization fixes it everywhere at once. If one page fails while others convert, the problem is that page's content, and a single-page rebuild is the right scope. A Shopify CRO audit tells you which one you have, and returns the fix ranked by revenue impact, not by opinion.