Sometimes the keyboard is too clumsy. Maybe your hands are full of coffee and guilt. In that case, let software do the heavy lifting. Tools like AutoHotkey (Windows) let you program a single key, like F12, to instantly freeze the screen—or even black it out completely. I have mine set to simulate a system crash crash (jk, it just shows a fake “updating” screen).
Fix Laptop Screen Freez In Windows 11 - YouTube
For the paranoid among us, ScreenBlur (a free app) lets you blur or freeze your display with a keyboard shortcut or a mouse wiggle. You can even set it to auto-freeze when you step away from your webcam. Ironic, right? Technology solving the problems it created.