How to make a desktop 2 that is blank and doesn't copy desktop 1

The Desktop is identical from one Desktop to another.

If you want to unclutter a Desktop the solution is to create a folder on the Desktop containing items you wish to move off the Desktop. Then, move that folder someplace else.

The Desktop is just a folder like any other. Its contents just happen to be shown on... the Desktop.

To add - As John Galt noted above, Desktop is in fact just another folder nested within your Home folder, and its contents are always on display on the... desktop... any desktop... including any desktop space you create with Mission Control.

If you wish to rid the desktop itself of clutter, then your best action will be to gather up the miscellaneous files and folders that live on your desktop and place them into other folders, such as Documents, or other folders you create within your user Home folder.

When you create a new desktop (space), it's a good idea to immediately change the desktop picture for that space. This creates a visual aid as you switch from space to space.

These Apple Support documents will get you started:

Work in multiple spaces on Mac - Apple Support

Use Mission Control on your Mac - Apple Support

When using desktops in Mission Control, the key to maximizing your efficiency and controlling the clutter from desktop to desktop is to assign each of your applications to a particular desktop space. Once you grasp this, and especially when combined with trackpad gestures, spaces and Mission Control become awesome productivity tools.

When using Mission Control, hiding apps becomes completely unnecessary, and application windows maintain their positions and sizes. And when restarting your Mac, apps can reopen and will retain their desktop locations and their open windows.

If you assign an app to a specific space, the app will always open in that space. It is important to understand that for the purpose of using multiple desktops in Mission Control, Finder will behave like an application. As such, it may be helpful to assign Finder its own desktop space just as you will other apps.

To assign apps to a particular space, create a desktop space for the app you want to assign.

• Press F3 to activate Mission Control. Then move the cursor to the plus ( + ) sign at the top-right corner of the screen. Click that to add a new desktop. Then click the newly added desktop thumbnail to select and move into the space.

• Next, assign your app to that desktop space. Click and hold the app’s icon in the Dock until the pop out menu appears. (You may need to first launch the app to see its icon in the Dock.)  From the pop out menu, choose Options > Assign To > This Desktop.

• Now, every time you launch that app, it and its windows will open in that specific desktop.

Other desktop assignment options are:

• All Desktops: The app opens in every space.

• Desktop on Display [number]: The app opens in the current space on a specific display (if more than one display is available).

• None: The app opens in whichever space you’re using at the time.

To delete desktops, activate Mission Control (F3). Then slide the mouse up and hover over the thumbnail of the desktop you wish to delete and click the X when it appears in the corner of that thumbnail.

The purpose is so that each Desktop may contain a different set of windows, which can consist of folder contents or windowed apps. Each one can be as cluttered or as uncluttered as you please.

Refer to this excerpt from Work in multiple spaces on Mac - Apple Support (emphasis added):

"If the desktop on your Mac gets cluttered with open app windows, you can use Mission Control to create additional desktops, called spaces, to organize the windows. When you work in a space, only the windows that are in that space are shown."

You might try rebooting your Mac before you attempt any other changes.

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