Question

how does friction help the players in sports such as soccer which involve kicking, stopping, running, etc.?

Answer 1

The players and athletes have to run fast. So, greater friction is  required between the soles of shoes and ground to prevent slipping . To increase friction spikes are provided in the soles of shoes worn by players  and athletes . Spikes are the pointed nails which get into the ground  and increase friction  between shoe and the ground This prevents slipping of players or athlete on kicking, stopping, running,etc......