Problem with the camera, 2D.

Hello, I got a problem with my camera script and hope someone can help me. It almost work like it should, but I am very new to Unity and have looked a lot of places for answer before asking you guys. My Camera is working as it should, except for the y.value. I want the y value to be locked to the game, but nothing seems to work for me. I have attached my model to the camera, but I still get a part that is not part of the game in my camera view.

Hope you can help me.