Three quick ways to right-click on a Mac, whether you use a trackpad, mouse, or keyboard.
Place two fingers on the trackpad and tap once. This is the default right-click method on most Macs.
Press and hold the Control key on your keyboard, then click normally. This works with any mouse or trackpad.
Open System Settings > Trackpad > Point & Click, then make sure "Secondary Click" is turned on. You can choose between two-finger tap, bottom-left corner, or bottom-right corner.