If you kept it in your Dock, you can click the Mission Control icon.Double-tap on the top of your Magic Mouse with two fingers.Swipe up with three or four fingers on your trackpad.You can use your Mac's trackpad or a Magic Mouse to activate certain shortcuts for windows management. Command (⌘) + `: This moves keyboard focus to the next window.Control (⌃) + F5: This moves the keyboard focus to the floating window.Pressing it again moves keyboard focus to the next window. Control (⌃) + F4: This moves the keyboard focus to the active window.Control (⌃) + Down Arrow: This shows all the windows of the frontmost application.If you need a little more room on screen, consider hiding your Dock. Option (⌥) + Command (⌘) + D: This toggles on and off Dock Hiding.

Shift (⇧) + Command (⌘) + Tilde: This switches to the next most recently used window of the frontmost app.Command (⌘) + Tab: This switches to the next open and most recently app.Command (⌘) + Option (⌥) + W: This closes all the windows of the frontmost app.Command (⌘) + W: This closes the frontmost window.Command (⌘) + N: This opens a new window (or document, depending on the app).Command (⌘) + Option (⌥) + M: This minimizes all the windows of the frontmost app.Command (⌘) + M: This minimizes the frontmost window.Command (⌘) + Option (⌥) + H: This hides the windows of all apps except for the frontmost app.Command (⌘) + H: This hides the windows of the frontmost app.There are several shortcuts that can help you navigate macOS without ever having to lift your fingers from the keyboard.

How to close all windows on a mac