DC dread it.
Any game where contact can be made is an excuse to make strong painful contact. This means some children spend the lesson standing at the edge of the sports area doing everything they can to not be involved in the game.
Any game involving a ball is an excuse to kick or throw the ball at someones face forcefully. This means that some children spend the lesson running away from the ball.
Some teachers assume all children know the rules of football, rugby, hockey etc and so never bother teaching them. This means only the 'sporty' kids are able to play the game and excel at the activity.
The kids who play sports outside of school are in the same group as kids who have no interest and play no sports. Again compounding the problem of only sporty kids being able to play and excel in the activity.
If you want to improve things then their needs to be safe non-contact activities made available for the non sporty kids. eg trampolining, chess, meditation, yoga, tai chi, bowls, archery, parkour etc.