As monitor resolutions increase, default icon scaling often becomes comical. A default icon on a 32-inch 4K monitor can look like a giant, pixelated postage stamp. The "Make Icons Smaller" feature is the primary correction tool for High-DPI displays that haven't scaled the UI text properly.
Change your screen resolution and layout in Windows - Microsoft Support make desktop icons smaller
If the "Small" preset isn't quite right, you can use your mouse for more precise control: As monitor resolutions increase, default icon scaling often
Click on an empty spot on your desktop background to ensure is active. As monitor resolutions increase
Go to your desktop and press and hold the key on your keyboard.