It was just the perfect storm of missed opportunities and Murphy's Law. There is lots of blame to go around starting with Levis and his bad day, the o-line, the missed field goal, blocked extra point, etc.
Murphy's Law: Barion Brown scores if not tripped up by his own man, Flax goes down with cramps on the play before Levis fumbles and in comes a kid that can't block anybody, targeting not called or reviewed on the Levis fumble, Old Miss player clearly standing on the goal line after a punt, refs review, don't call it, and we wind up with a safety after Levis holds the ball too long again, yada, yada, yada.
No way to win a game with all that working against you. Best just to move on after airing it all out like I just did.