Once someone without any grappling training hits the ground it’s usually game over for them and if they get some colored BJJ belt above them it’s even worse.
In the video below, a BJJ practitioner chooses a rolling back take to finish the fight and submit the bully without doing any harm to him.
https://www.instagram.com/p/CEj9DwFlMfV/?utm_source=ig_embed&utm_campaign=embed_video_watch_again