I am a member of a group and I would like to see all the posts and comments from the beginning of the group (approx 8 months ago). Is there a way that I can do this without spending hours simply scrolling and expanding manually?
https://sociograph.io provides full content export for Facebook groups and pages. The exported data includes all posts and comments for the entire group/page history as 2 CSV files. Posts and comments metadata such as author, creation date, number of reaction per post is included as well. Full content export is a premium feature, short sample export is available for free
P.S. I'm the founder of the service