Hi brobinsondk,
Welcome to our community! 
In which course and lecture are you? Depending on the course, it might be that you have to use either Cinemachine 2.x or 3.x. In the “Complete Unity 2D” and “Complete Unity 3D” courses, you can achieve the same result with both versions but it can be a bit challenging because some concepts changed.
Here is a helpful link:
https://docs.unity3d.com/Packages/com.unity.cinemachine@3.1/manual/CinemachineUpgradeFrom2.html#new-components-with-clearer-names
See also:
- Forum User Guides : How to apply code formatting within your post
- Forum User Guides : How to mark a topic as solved