How to lock camera in Y axis. Sidescrollerchar

I’m having these problem when I go forward (right) camera Y axis distance from camera to the player is the same but when I move backward (left) the camera Y axis doesn’t stay in place. It jumps super close to the player to the point you can’t see player anymore. How would you lock Y axis or any axis positon for that matter in case I needed somewhere down the line. Also everything works ok at the default settings but when you move the camera boom your self to adjust the distance then it screws up when moving left. Thank you.

Ok newer mind. I reset all the Transform values and then used target arms length values. Don’t move Camera boom manually, it screws up. Or at least it did for me.