Monitor ad performance metrics

I need an ad performance check for these three campaigns this morning. For the Downtown Coffee Shop campaign report last 72 hours CPL, CTR, impressions, frequency, and cost per thousand; for Yoga Studio show sign-ups and cost per signup plus landing page conversion rate; for Landscaping show leads and qualified lead rate. Highlight any campaign with CTR under 0.8%, frequency above 3.5, or CPA rising more than 20% week over week. If a campaign is underperforming, recommend one simple priority fix.

Before I brief the owner, make the report easy to act on. Put a one-line health score at the top of each campaign with the single metric most likely explaining performance (creative, audience fatigue, budget). Surface the worst-performing ad creative and the worst-performing placement. Flag any sudden metric shifts in the last 24 hours and suggest a one-paragraph comment to explain the change to a non-technical owner.

Yesterday morning the Yoga Studio campaign had 2.1% CTR; this morning it reports 0.9%. The creative and budget were unchanged and we paused no ads. I cannot tell if the platform changed distribution, a placement started underperforming, or the audience has fatigued. What is the most likely diagnosis and what one diagnostic action should I run now to confirm it?

Over the past three months I keep chasing sudden CTR or CPA swings that demand urgent fixes and then take us off strategy. Where am I consistently losing credibility or time, and what single reporting or monitoring habit should I adopt to stop being surprised and to communicate changes to clients faster?