Intermediate55 minutesStep 1Pro-BasicLimited time

Google Ads Diagnostics: Find the Problem Layer First

When the account worsens, do not edit bids first. Confirm basic metrics, tracking, GA4, Shopify, Merchant Center evidence, and freeze rules before choosing the problem layer.

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Basic full lesson

When the account worsens, do not edit bids first. Confirm basic metrics, tracking, GA4, Shopify, Merchant Center evidence, and freeze rules before choosing the problem layer.

Diagnose the layer holding performance back, then improve search terms, bidding, budgets, landing pages, PMax, feeds, and value signals without giving up profit control.

Lesson outline

  1. 1Write the break window
  2. 2Open Google Ads Change history
  3. 3Reconcile GA4 / Shopify order evidence
  4. 4Check Search terms and source mix
  5. 5Check Feed, page, and profit counter-evidence
  6. 6Choose one primary problem layer
  7. 7Choose one single-variable action and review window
  8. 8Copy the diagnostic notes and schedule review

Public core framework

  • Record date, campaign, device, market, query or SKU, and the CPA, ROAS, CVR, conversion value, or checkout-to-purchase change. Do not write only “performance got worse.”
  • Record same-week budget, target CPA / target ROAS, bid strategy, keyword, negative, conversion action, bulk edit, and auto-applied recommendation changes. Put change date, changed by, and campaign into the diagnostic sheet.

Sources and review

Last checked: 2026-09-30

Applies to: This preview is for the lesson's public problem, structure, and operating boundary. Verify current platform, account, and business facts separately.

Limitations: The preview is a bounded summary and excludes member text, personalized interaction data, and full case derivations; recheck source pages before acting.

Reviewed by: Ranfeng Wei · Next review: 2026-12-29

  • Public facts and operating boundaries in this preview→source
  • Public facts and operating boundaries in this preview→source
  • Public facts and operating boundaries in this preview→source
  • Public facts and operating boundaries in this preview→source
  • Public facts and operating boundaries in this preview→source

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