https://drive.google.com/file/d/1idGe0oycdcAiFrLNnTzV4KuNrLNk-MdK/view?usp=sharing
The above link is for walmart json.
You can practice on this though i recommend to use some different json after your done with this one because that will help you build your own logic.
Will provide the csv file as well after a while.