Sharepoint usage analytics and delve data

Hello,

I'm planning to start reporting on SharePoint usage analytics and user activities in Delve using Power BI. However, I'm having difficulty finding good resources on how to retrieve the necessary data through APIs and which APIs to use.

Specifically, I'd like to know which APIs I can use to access the SharePoint usage analytics data and user activity data in Delve. I'm also looking for documentation on how to retrieve the data I need.

If you could provide me with resources that explain how to use the appropriate APIs and how to retrieve the data for reporting in Power BI, I would greatly appreciate it.

Thank you!