Epic Games Launcher has a Cloud Save feature that can back up saved data. This feature automatically backs up saved game progress to Epic's online cloud service.
If you've created a new save file, be sure to enable Epic Games Cloud Saves to back this up to Epic's online cloud service:
- Open the Epic Games Launcher.
- Select Settings from the menu button on the top right
- Check the Enable Cloud Saves checkbox.
- Launch Rocket League.
If you are trying to solve a Load Failure error in Rocket League and this did
not help, try the next step: How do I reinstall Rocket League on a PC?