Audience Studio campaign performance reports

Hello fellow Trailblazers! I am part of a team that manages the Audience, segments and reporting of our brand. We have a few questions about reporting since we recently have some audiences running within this tool:

When we are inside a campaign, in the frequency report where we see a graph of the impressions vs frequency we have a lot of filters like month, top sites granulary, frequency breakdown granulary... we understand this is used to see how many times we are impacting a user or audience with this campaign, but it is a bit confusing to translate this for a report for our managers, I mean what kind of insights can we get from these reports and how do these filters work?

Same issue with the delivery trends and frequency breakdown reports, It would be very helpful if any of you can tell us how to use these reports to get insights for our bosses. And finally if you guys have some links or resources to learn more about how to use these reports for strategic insights it would be very helpful for us!