Macbooks come with a built-in trackpad that you can press anywhere to manually “click” the mouse (with the mouse being your finger).
You can also set the trackpad to accept a single tap as a mouse click. Even a light and gentle tap on the trackpad will act as a mouse click.
To set your Macbook’s trackpad to accept taps as mouse clicks, open your System Preferences and click “Trackpad”.
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Then just check the “Tap to click” option at the top left of the screen.
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Your trackpad will now let you tap, instead of requiring you to click.