A game I made in python to test the waters of pygame. If you already have pygame installed, you will get an error of type "FileNotFoundError". The source code contains my personal file paths. You need to change the file paths that access the sound files. To do that, go to the sound file in your files in the directory where you extracted the game,for example, click.mp3, right click it and copy its absolute path (relative paths likely may not work). Then, replace the path that is in the source code with the path you copied.
For example, instead of
click_sound = pygame.mixer.Sound( '/home/sadeem/Python/Shooter/shooter_game-main/test_shooter_game-main/click.mp3')
it will be
click_sound = pygame.mixer.Sound( '/path/to/click.mp3')
where '/path/to' is your own copied path.
Do the same with the two other sound variables, shoot_sound and bang_sound, and your game will be ready to play.