Congratulations. You have successfully install, configure and connect a Next.js site to Drupal. 🎉
Take a look at the documentation to learn more about decoupling Drupal with Next.js.
We understand there's more than a few steps to properly configure Next.js for Drupal.
It is built this way for flexibility.
With the current setup, you can easily configure one Drupal backend and serve multiple Next.js sites (content hub).
You maintain control on which content is pushed to which sites and how.
If you need help, feel free to create an issue on GitHub.
You can also reach out on Twitter.