How to reliably retrieve all posts from a Facebook group going back to 2015 (search misses results, scrolling crashes around 2022)

I'm a member of a Facebook group that has been posting content (trivia questions) since 2015, and I want to catalogue every post starting from the earliest one. Problem 1 : Search is unreliable: Using Facebook's built-in search within the group doesn't return all posts from a given year. Some posts are omitted for no apparent reason, even when filtering by date. Problem 2 : Scrolling crashes: Manually scrolling back through the group's history works up to a point, but once I reach posts from around 2022, the browser tab/app consistently crashes before I can get further back. Constraint: The posts don't share consistent keywords or phrasing, so text-based search isn't a reliable filter. Filtering by month/year seems like the only practical approach, but I can't get it to work reliably. What I'm looking for: A reliable method or tool to filter/export Facebook group posts by date range Any way to export or archive a group's full post history (browser extension, API, third-party tool, etc.) A workaround for the crashing when scrolling through several years of content Has anyone dealt with this before, and what worked for you?