Some common ways that people get pumped for a game are..
1) Music
2) Listening to a speech
3) Reading the Bible
4) Gameday Routine
Whether your gameday routine is one of the following, or something different, each player has their own way of getting ready for a game. It is important for you, as an athlete, to understand that having adrenalin is very big and can affect your play tremendously. There is no right or wrong way to get motivated. Some players may not have to do much to get motivated while others may have to go above and beyond. There is nothing wrong with either of these methods if you get there.
Performance can be hard if you are not pumped for your game. Below is a link that has a lot of good tips on how to get pumped for a game.
https://www.wikihow.com/Get-Pumped-up-Right-Before-a-Game
Below are some links to motivational speeches that can help get you ready for your game. These are each very inspirational and can truly motivate you if you are finding it hard to get motivated.
Life of a Student Athlete 