You can natively transfer files between your PC and iPad via iCloud, using iCloud for Windows. For Windows 10, this can be downloaded and installed directly from the Microsoft Store:
Download iCloud for Windows – Apple Support
Set up and use iCloud for Windows – Apple Support
After copying files to your iCloud Files folder, using Windows File Explore, you can then move files from iCloud to your local iPad storage using the iOS/iPadOS Files App.
An alternative to move data between your iPad and Windows PC is to install Apple iTunes on your Windows PC. Again, for Windows 10, iTunes for Windows should be obtained from the Microsoft Store:
Download and use iTunes for Windows – Apple Support