unity rotate only one axis code example
Example 1: how to rotate object in unity only on one axis
// If you want the obj to rotate on only one axis do this
// Create vector3
Vector3 target_position = new Vector3(transform.position.x,
target.position.y,
transform.position.z);
// give the target_position to transform.LookAt
transform.LookAt(target_position);
Example 2: unity rotate around axis
transform.Rotate(axis, degrees);