Retrieving all users from platform management with API

Hello, I’ve been trying to use HTTP requests to receive all users from Platform Management, using either Groups or User API calls (which can only call a user by his known id which I don’t have access to) for audit reasons. The authentication is fine, I have all the access but it seems like the Groups method doesn’t work because the base url is wrong (I have my partitionGlobalId). I’ll leave screenshots below for what I am using and if there are other methods or suggestions feel free to help. Thanks! (and no I don’t need /odata/users)

I figured it out but another issue arose. The groups are displayed, but the members in those groups aren’t. Any idea why or how to fix it?