Here are some ways to right-click on a mac:
1. Press and hold CONTROL, then click
2. On a trackpad, place two fingers down and click with your thumb
3. On a newer trackpad, you can simply click by pressing down two fingers
4. On a newer Mac, you can assign the bottom right or left corner to act as a right-click
Please visit Apple’s website for more information on how to customize your trackpad behavior.