Facebook algorithm change incoming...

https://newsroom.fb.com/news/2019/05/updates-to-video-ranking/

1 minute long videos will have a better reach. Even more for 3min+

Same for original content

On my opinion in cotemporary web there is no need to make a video longer than 7 seconds
If you remebmer the Vine App , it was the best format of viral videos ever. Instagram just took their idea and created story format. I think eveything that's longer than 15 seconds is considering boring nowadays

How original should you get when adding things to videos from YouTube?