How to migrate your files to iCloud Drive on MacThough you can access your Dropbox, OneDrive, and Google Drive documents from the Files app, you can also just migrate everything directly into iCloud Drive on Mac.
iCloud Drive is Apple's answer to a cloud-based storage system. It syncs with your Files app on iPhone and iPad. Over the years, it has improved a lot in terms of usability, including working across various platforms. If you've been storing files in another storage service, like Dropbox, Google Drive, or OneDrive, and you want to condense down to just iCloud Drive, you can easily move all of your data with just a few steps.
Move files to iCloud Drive on Mac:
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How to migrate your files to iCloud Drive on Mac