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.”
With this option turned on, you can use the Tab key to navigate to all controls on the screen.
To return to making the Tab key only navigate to text boxes and lists, turn off Keyboard Navigation.
You can also enable 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.
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.