How do i get my old desktop back?

To get your old desktop back, you can try restoring your system to a previous state using System Restore if you're on Windows. If you have a backup of your files, consider restoring from that backup. If the desktop has been altered due to a recent update or software installation, you may also want to check the settings or reinstall any customization software you were using before. Lastly, if you have a specific desktop layout or theme, you can reapply those settings in the personalization options.