Most advertising accounts do not underperform because of a single broken campaign. They underperform because small structural issues accumulate until spend stops mapping to intent.
Campaign structure carries more weight than bids
When campaigns are grouped by convenience rather than by search intent, budgets get pulled toward whichever keyword happens to spend fastest. Restructuring around intent gives every product a clear place to compete.
A clean structure also makes reporting readable. You can see which themes deserve more budget instead of guessing from a blended account average.
Search term data is the cheapest research you own
Every click buys a data point. Reviewing search terms on a fixed cadence surfaces new keyword themes, wasted spend, and product-market signals that never show up in a dashboard summary.
Negatives should be treated as an ongoing discipline, not a one-off cleanup task.
Advertising cannot fix a weak product page
If traffic lands on a listing that does not answer buying questions, higher bids simply buy more expensive exits. Listing quality and advertising efficiency move together.