Nazca Design is not yet in the pip repositories. Nazca 2.0.2 is another package.
Thus “pip install nazca” installs a package unrelated to Nazca Design.
You’ll need the zip from the Nazca Design download site.
The current version is 0.5.13: https://nazca-design.org/dist/nazca-0.5.13.zip
After downloading, try: “pip install nazca-0.5.13.zip”