Facebook public posts and comments scraper!

I am trying to create Facebook public posts and comments scraper, tried with many approaches till now like “Ultimate Facebook scrape”, “Phantom Buster” 3rd party API, using python lxmk lib, jsoup etc
we are currently exploring Graph API, but its getting difficult to get appropriate access token from facebook to get any public posts and comments for any given profile.

I hope i am able to explain my use case effectively!!
Please share if any one have some better solution to scrape facebook posts and comments.

Regards