Hi,
I'm Rodrigo and I'll help you.
To stop the OneDrive automatic backup of your files, disable the OneDrive backup feature.
Right-click the OneDrive icon on the right side of the taskbar (cloud icon) > Settings > Sync and Backup > Manage Backup > Turn off all options.
This will disable the OneDrive Backup Feature and restore the default location of the folders. Your files may "disappear" but are stored in the OneDrive folder, you can move the files from there to your folders.