Facebook reel scheduling/posting automation tools?

Hi all! I'm looking for a a FB reels automation tool that can schedule in bulk using file names as titles/captions across multiple pages.

Looking to pre-schedule 300-500 reels per page a few hours apart or 2-3x a day.

Any suggestions for tools that can bulk this?

Tried Later, Metricool and some others but they can't do bulk properly without like 50 hours of time to schedule 300-400 reels which is not feasible.

Did you find a tool? I'm looking for the same thing for IG.