Please try the below:
1. Switch to a different network and try again.
2. Uninstall and delete any unused software or files and clear the data cache to create more storage space.
3. Google Play Store may have blocked them; download them via another platform.
4. Back up your phone data (contact, text message, etc.) and restore your phone to factory settings.
If the issue persists, please contact our Customer Support for further assistance.