cant curve camera 3d position keyframes in Z Space

So im watching a tutorial on how to use 3d cameras and i cant Curve the path of my 3d camera to make it curved like this

As you can see i cant see the keyframes to drag them and put them in a curved way

 The guy from the video im watching (a 3 years old video) has the keyframes in the line while mines are in a box and i cant manipulate them.

(the photo with red circles is from the tutorial)

 He has the keyframes there but mines are in a box and cant be manipulated

IM USING THE LATEST VERSION