One can recover deleted files from Procreate if they have backed them to iClouds. To check if you have an iCloud backup, you can follow the steps given below:
- Navigate to Settings in your device
- Press Your Apple ID
- Select Manage Storage
- Choose Backups
- Select Backups again
- Verify that Procreate is included in the app list
- If so, you can use that backup to restore your entire iPad, including your Procreate files up to that moment.