LR downloader

I don't know why the Adobe Tech department used the Downloader, the much simpler way is to enable syncing in your Classic catalog. Once syncing is enabled a copy of all the contents of your cloud account are automatically downloaded into the Classic catalog. However, before enabling sync you should first of all decide where on your desktop computer you want those 3632 photos to be stored....by default they will be stored in an obsure location on the computer's system drive, but if you want them in a location of your own choosing you should open the Classic Preferences>Lightroom Sync tab, and there you will find the option to select your own location for the download images.

Once you have done that, you can enable your Classic catalog to sync with the cloud by clicking on the Cloud icon at the top right of the Classic screen and then you'll see the option to Start Sync. Once that is done a copy of the cloud images will start downloading into the Classic catalog.