Scrape images and associated comments from public Pinterest, Facebook group, Instagram, and google photos

Prefer backend server side solution which is passed a URL where output is returned as json. But might also accept front end chrome extension where i browse to public page to be scraped. Must get entire or predefined max number of images/comments from target page without having to manually scroll thru the target page (front end or backend solution). Not sure what is possible so please describe what solution you would provide (i.e. front end, back end, Dev API required vs public scraper, language used etc). And most importantly if you already have a partial solution for this (written by you) that i can view. Unlimited license to Final working code required.