This sounds like you are trying to create some sort of backend reporting?
I am not sure if Adobe Analytics would be the correct tool.. Web Analytics is about what people are accessing, not a holistic list every asset in the system and what is and is not being used...
I believe that AEM itself should be able to do reports of that nature.
I found this with a quick Google search: https://www.tothenew.com/blog/custom-reporting-in-aem-digital-asset-management-dam/#:~:text=Navigate...
I think this would be what you are looking for without over-complicating things by trying to use a Web Analytics tool.