The trick with KPI is to keep it relevant, meaning that every KPI should have a clear purpose and impact on your bottom line. When KPIs are used this way, they can help you understand how your business is performing and the areas that need improvement. When they are not used this way, they can be a complete waste of time and resources. You can watch my presentation made with the help of https://masterbundles.com/templates/presentations/powerpoint/marketing/ source which I have specifically made to clear confusion on this very topic. Feel free to comment below if there is anything concerning to you.