Shopping ads in the first row are more likely to be clicked on and generate more sales. There are many reasons why your ad might not show up in the first row. The most common reason is that it’s not relevant to the user query. The relevancy of your ad is an important factor for its placement in the search results page. Another reason could be that you have incomplete product information, wrong product category, or non-competitive pricing or shipping rates. The search engine prioritizes advertisements that showcase a lower product price, better shipping rates or better offers in the listing.