To resolve the issue of Race Master 3D not being able to reinstall despite not being deleted, follow these step-by-step instructions:

1. Check Device Compatibility:
Ensure that your device meets the app's compatibility requirements. Go to the Google Play Store, search for Race Master 3D, and check the "Additional Information" section for device compatibility.

2. Clear Google Play Store Cache:
Go to Settings > Apps > Google Play Store. Tap on Storage, then select Clear Cache. This can help resolve any caching issues that may prevent the installation.

3. Check Device Certification:
Open the Google Play Store, tap on the three horizontal lines (menu icon), and go to Settings. Check the Device Certification status. If your device is not certified, many apps, including Race Master 3D, may not install properly - learn more.

4. Restart Your Device:
A simple restart can resolve multiple issues. Just turn off your device and then turn it back on.

5. Check for System Updates:
Go to Settings > System > System Update and check if there are any available updates for your Android version. Install any updates and try installing Race Master 3D again.

6. Ensure Sufficient Storage Space:
Verify you have enough storage space on your device. Go to Settings > Storage and check available space. If space is low, consider deleting unnecessary files or apps.

7. Reset App Preferences:
Navigate to Settings > Apps, tap on the three dots in the upper right corner, and select Reset app preferences. This will reset all app preferences but won't delete any app data.

8. Install via Alternative Methods:
If still unable to install through the Google Play Store, consider downloading the APK from a trusted source. Ensure you enable installations from unknown sources in your device settings - learn more.

9. Contact Support:
If none of the above solutions work, consider reaching out to the game developers or Google Play support for further assistance.

Following these steps should help you successfully reinstall Race Master 3D on your device. If issues persist, double-check the device specifications and ensure the app is available for your region.