Your feed is the campaign

In shopping, the feed is the targeting. A product with a thin title and no GTIN is not competing badly — it is not competing.

The six fixes, in the order they usually pay: put the attributes people actually search into the title, front-loaded. Fill GTIN and MPN so your listings can be matched to the rest of the market. Set product_type as your own taxonomy rather than leaning on Google's category. Add custom labels for margin tier and seasonality so campaigns can be split on business logic. Fix the image so the product fills the frame. Keep availability and price honest, because a disapproval on either is a silent outage.

We have seen a feed rebuild move an account further than any bid strategy change in the same quarter, twice, on accounts where the bids were already fine.

Bids decide how hard you compete. The feed decides whether you were entered.