Dashboards can drown you in numbers. For most campaigns, three metrics tell you almost everything: click-through rate (is the message landing?), cost per acquisition (is it profitable?), and conversion rate (is the landing page doing its job?).
Use the date filter to compare like with like. A 7-day view shows momentum; a 90-day view shows trend. Judging a campaign on a single day is how good campaigns get killed too early.
The channel filter isolates where performance comes from. If your blended CPA looks fine but one channel is quietly bleeding budget, this is where you'll catch it.
Finally, use campaign comparison to A/B your own history. Put last month's winner next to this month's test and let the chart make the decision for you.