Uninstalling Steam will cause all your installed games to get deleted, as all associated files are removed during the uninstallation process as well. However, you can prevent this through two methods. The first is to move the Steam apps folder from the Steam directory to another location on your PC. Then copy this folder back to the directory after reinstalling Steam. Alternatively, create backups of Steam games using Steam’s built-in backup tool before uninstalling Steam. Recover these backups after reinstalling Steam at a later time.