What to use for analytics of internal resources?

Question

Analytics

What are the best tools to use for web analytics of resources with sensitive data? I know that the Google Analytics counter can be installed on password-protected pages, but here it is critical that the information does not leak out.
One more thing: the application is single-page, so you do not need to track the attendance of individual pages, but have features like a heatmap from Google or a web browser from Yandex.

Answer 1

piwiki (matomo) put on your server
https://matomo.org/download/