Its hard to know since in football everything, players, coaches, schemes ect.. all need to work as one unit to be a winning team.
I think this team has talent, maybe not to the level of a top 25 team but to level that we should have destroyed southern mis and illinois. So for me in mainly comes down to players mentality and coaching. Breaking that down even more. It is the job of the coaching staff to get players mentally ready for a game. If a players isn't mentally really it is the job of the coach to recognize this and replace him with someone who it.
This Alex Lewis dude is prime example, he should never be playing, never be a captain and probably should never even be on the team. If this team is filled with guys like this it is easy to see why they mentally break down every game. This all falls on MR to an extent. I do see a positive on his part that he is starting to put in some freshman and younger guys. My hope is it is to weed out the negative mentality.
Who knows any more really. I break it down like this:
60% coaching issues
30% player mentality
10% player talent