Why is the national football goalkeeper Yan only in the small restricted area?

1. The defense line had to retreat. The opponent was beaten because he stayed in the small restricted area when he pressed the square to force his opponent, which led to the distance between the goalkeeper and the defender being too large and the defender was forced to retreat. Once the defender retires, so does the midfield. If the midfield retreats, the forward line will also retreat. This is why the national football kick-off in the first half was often squashed by the opponent near the restricted area, which also led to the only goal conceded in the whole game.

2. The defensive range is too small, which makes it more difficult for the defender to defend. Because he didn't dare to attack, Yan could only stick to the small restricted area. Once the opponent's high-altitude ball falls outside the small restricted area, he is afraid to attack and catch the ball. Sometimes it's time to come out and pick it up, but your goalkeeper is afraid to come out and pick it up, which is equivalent to increasing the defensive difficulty for the defender.