Hello
I am Abdal and I would be glad to help you with your question.
You can consolidate your files by copying and pasting the files from iCloud and OneDrive to your "c:\Users\name\documents" folder. To back up your files to OneDrive, you can set up OneDrive to automatically sync your "c:\Users\name\documents" folder to the cloud. You can do this by following these steps:
Download and install OneDrive on your computer if you haven't already. Sign in to OneDrive with your Microsoft account. Right-click the OneDrive icon in the system tray and select "Settings". Select the "Account" tab and then click "Choose folders". Select the "Documents" folder and any other folders you want to sync. Click "OK" to save your changes.
OneDrive will now sync your files in the selected folders to the cloud, and you can access them from any device with OneDrive installed.
I hope this information helps.
Regards,
Abdal