Data cleaning and Analysing - eCommerce sales data

Good day,

I have sales data from an eCommerce competitor

Our scraper scrapes the entire catalog of the competitors website every day. Each product page contains a JSON page with the following information

- title
- pictures url
- category
- sub category
- stock amount
- reviews
- seller name
and many more (see below for json file sample)

https://jsoneditoronline.org/#left=cloud.cf3aa77c383946a6b9201b94404410d6

I would like to turn this information into valuable insights such as best selling products or seller with the most amount of sales etc