See out a win. Keep the ball in safe areas under pressure, take the sting out of the game, make no risky passes near your own goal, and defend narrow and compact when you do lose it.
Play a small-sided game with one team a goal up and a short clock. The leading team wins by keeping the ball or defending the lead; the chasing team must score, and if it does, reverse the lead and play on. Coach the leading team to keep the ball in the corners and wide areas, take no risks in their own half, and stay narrow and compact out of possession.
Seeing out a win is one of the most under-coached skills in youth football and one of the few that is genuinely contested. Plenty of good coaches think teaching thirteen-year-olds to kill a game trades long-term development for Saturday's result, and they are not obviously wrong. Others point out that losing leads repeatedly teaches children that competence does not matter, which is its own kind of harm. Decide where you stand before you run this, because the players will ask what it is for.
A defensible position is that this is about retaining the ball under pressure in the least forgiving area of the pitch, which is a technical skill worth having regardless of the scoreline. Coached that way, the exercise is honest.
The core behaviour is where the ball goes. Safe areas means wide and towards the corners, far from your own goal, because a turnover there is a throw-in and a turnover in front of your own box is a chance. Players under pressure default to the opposite, playing square across their own third because it feels available.
Shielding rather than forcing is the individual skill. Roll away from the presser with the body between him and the ball, and accept a throw-in or a goal kick as a good outcome. A player who tries to play a clever pass to prove he can is the specific failure mode.
When possession does go, be narrow and compact immediately. A lead is defended in the centre, and the wide areas are worth conceding for a few minutes.
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.