1. Go to the main menu of the PlayStation 4.
2. Navigate to "Library" in the top menu.
3. Select "Purchased".
4. Find the game you want to uninstall and highlight it.
5. Press the "Options" button on your controller.
6. Choose "Delete" and confirm the action.

Please note that uninstalling a game will remove all game data and saves from your console. Make sure you are certain that you no longer want to play the game or access the game data before uninstalling it.