Right-click on the app’s icon in the menu bar and select “Quit,” or.
The first thing to do, of course, is try to quit the app normally: If that happens to you (and it might happen often if you’re playing with the latest Monterey betas), it’s time to quit the app. Apps on macOS are usually well-behaved, but there are times when they can stop working or freeze and slow down your entire Mac.