If you keep falling back closer and closer to the goal, you're just waiting for a disaster to happen. You need to keep attacking/ or counter attacking and relieving pressure throughout the entire game. The Bayern game in particular was infuriating because we completely outplayed them in the first half. Had we kept going in the second, we could easily have scored the third and put the game to bed. Instead, Allegri chose to fall back and subbed Morata (our best attacking player in that game) for Mandzukic, who offered zero attacking threat. With all the attacking talent Bayern had at their disposal, it was only a matter of time before they scored. You can blame individual errors and players all you want, but being in a system that requires them to be flawless for 90 minutes is a recipe for failure.