It's easy to do, follow these:
- Turn off Desktop and Documents. Apple menu > System Settings > Apple ID > iCloud > Apps Using iCloud > iCloud Drive > Turn off Desktop & Document Folders > Done.
- Move items from iCloud Drive to your Mac as you need them, or select all of your files and drag them to the place you want to keep them.
- If you turn off iCloud Drive or sign out of iCloud, you have the option to keep a local copy of your files that are in iCloud Drive.
Easy right? Just turn off the iCloud settings and hope you can enjoy your digital life.