For retailers, the product feed is the campaign
Google Shopping does not run on keywords. It runs on your product feed. If your titles, attributes and prices are wrong or thin, Google shows your products against the wrong searches, or does not show them at all. No amount of bidding fixes a feed that misrepresents what you sell.
Most ecommerce accounts we audit have the same problem underneath. Performance Max is left to its own devices, best-sellers and dead stock share the same budget, and success is judged on blended return on ad spend (ROAS) that hides which products actually make money. Spend goes up, profit does not.
We work as an extension of your trading and marketing team, not an agency that sets PMax live and walks away. We rebuild the feed, split campaigns by margin and product type, and feed Google clean signals so it finds buyers who convert. This is one channel inside our paid media system, and it pairs with everything else you run. Start with a free ecommerce audit.