Ask Best Drupal Modules for a Membership Site?

[SuperAffiliateX]

I want to build a membership site using Drupal. I don't know which modules to use. I need something for user registration, payments, and content access control. It should be easy to set up and manage. I also want to make sure members get a smooth experience. Are there free modules that work well, or do I need paid ones? I don't want to install too many and slow down the site.

What are some good Drupal modules for a membership site?