Use your keyboard like a mouse with Mac
You can use your keyboard to perform many of the same actions you perform using the mouse, such as navigating to or selecting menus, icons, text boxes, lists, and items in windows and dialogs. With keyboard navigation, you can use the Tab key to move focus forward, or press the Shift and Tab keys at the same time to move focus backward.
On your Mac, choose Apple menu > System Settings, then click Keyboard in the sidebar (you may need to scroll down).
Turn on “Keyboard navigation” on the right.
With this option turned on, you can press the Tab key to navigate to the next control on the screen. Press Shift-Tab to navigate to the previous control.
If you want to use the Tab key to navigate only to text boxes and lists, turn “Keyboard navigation” off.
You can turn on Full Keyboard Access in Accessibility settings to use the Tab key and other keys to navigate controls and items on the screen. See Navigate your Mac using Full Keyboard Access.
You can also use your keyboard to move the pointer and press the mouse button. See Control the pointer using Mouse Keys.
If you have difficulty seeing the screen, you can use VoiceOver, the built-in screen reader on your Mac, to navigate to, hear, and interact with controls and items on the screen. See the VoiceOver User Guide.