Ask How can I track the purchasing behavior of subscribers of membership site?

[SuperAffiliateX]

I run a small membership site and I have no idea how to track what my subscribers buy. I want to understand their purchasing behavior so I can offer better content and services. Are there tools or plugins that can help with this? Do I need special software, or does WordPress have built-in options? I also want to know if tracking purchases will help increase retention and sales.

How can I track the purchasing behavior of subscribers on my membership site?