The main reason why we lose so many close games is because of Garrett and his inexperience as a coach.
First of all, when we have a small lead, he will start to chew time off the clock by calling running plays.
This allows the other team to gain momentum and mount a comeback. Now because we allowed them to get back into the game, this gives them the momentum. Thus, everything starts to unravel during crunch time. Garrett starts to panic because he doesn't know what to do. He thus makes bad decisions like icing the kicker, bad clock management, etc. Therefore we end up losing.
Garrett is the main reason why we lose close games. W haven't gotten blown out this year by anyone. Which means that coaching is the issue on why we can't close the close games like were supposed to.