How can I get site usage analytics from a specific workspace?

You can view information about how users interact with your workspace/site. For example, you can view the number of people who have visited the site, how many times people have visited the site, and a list of files that have received the most views. For instructions on how to access this data, read this article from Microsoft: View usage data for your SharePoint site.

For more detailed statistics about your data usage, you can used Microsoft 365’s unified audit log.