Pressing for beginners: close the distance fast while the ball is travelling, then slow down and get low over the last few metres so you cannot be beaten easily. Curve the run to show the attacker one way.
Mark a 40x30m area with two gates at the defending end. A server starts with the ball, an attacker waits in the middle, and a defender starts back by the gates. The defender may only move once the pass is played. The attacker tries to dribble through either gate; the defender tries to stop him. Rotate every repetition. Coach it in two halves: the sprint while the ball travels, then the slowdown as he arrives. Most young defenders do the first part and not the second, and that is what gets them beaten. Count a success as the attacker being forced away from both gates, not just as a tackle won.
Closing down has two speeds, and most young players only ever use one. They sprint the whole way, arrive at full pace, and get beaten by a simple touch to the side, because a body travelling quickly in one direction cannot change direction quickly.
The first speed is a sprint, and it happens while the ball is travelling. That distance is free. The attacker can do nothing until the ball reaches him, so every yard covered during the pass costs nothing and every yard covered after he controls it is contested. Going the moment the pass leaves the foot rather than when the attacker takes his first touch is the single largest improvement available to a young defender.
The second speed starts about three yards out. Slow down, shorten the steps, get low, arrive balanced. A defender who arrives under control does not have to win the ball. He only has to stop the attacker doing anything useful, and that alone is usually enough, because a covering teammate arrives shortly afterwards.
The curve of the approach is the last piece, and it is where individual pressing becomes team defending. Running in a straight line lets the attacker choose either side. Approaching on a curve closes one side off, which means the defender has decided where the attacker is allowed to go instead of waiting to find out.
The habit to break is diving in on arrival. Tackling is not the objective here, and a defender who commits and misses has removed himself from the play entirely, turning a contained one against one into an overload.
Save it to your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block. Or start from a blank pitch and build your own.