Reinstalling Rocket League can sometimes fix odd problems. You will first need to uninstall, then redownload Rocket League (This will not delete game save data).
To uninstall Rocket League:
- Highlight Rocket League on the Home Screen on your Nintendo Switch
- Press the + button on the right Joy-Con to open the game's options menu
- Select Manage Software from the menu on the left
- Select Rocket League, then select Manage Software
- Select Delete Software
- Select Delete when asked to confirm that you want to delete the game
To re-download Rocket League:
- Select the eShop from the Home screen
- Select the profile from which Rocket League was originally purchased
- Select the Profile in the upper right corner of the eShop screen
- Select Redownload from the menu on the left
Select the download cloud icon for Rocket League