You’re on the same page but you don’t see the other handles because you keyframed only the z rotation so there is just one blue handle there. That’s noticable on the right side with ther green color. On his right side there are three values that are keyframed. I haven’t watched the whole tutorial but these are my thoughts.
So how do I fix it?
Have you followed every step of Blender Guru? Because I feel like you haven’t done that.