Draw raycast problem

Unity Engine
1

Hi. Sorry for using Google translate. My problem is ;

I use 2 raycast. The first one is for the camera, that is, for the character to rotate(horizontal-vertical). 2. raycast to control the body. But the 1st ray sometimes coincides with the 2nd ray. And my character perceives the 1st track. He’s doing strange moves. How do I prevent this?

void Rotasyon2()
    {
        RotationMouseControl();
        Physics.Raycast(Vector3.zero, headcam.transform.GetChild(0).forward, out hit);
        transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.LookRotation(new Vector3(hit.point.x, 0, hit.point.z)), 0.3f);
       

        Ray ray = Camera.main.ViewportPointToRay(new Vector3(0.5f, 0.5f));
        Physics.Raycast(ray,out hitfire);
       
    }
    void Rotasyon()
    {
        RotationMouseControl();
        if (Horizontal !=0 || Vertical !=0)
        {
            Physics.Raycast(Vector3.zero, headcam.transform.GetChild(0).forward, out hit);
            transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.LookRotation(new Vector3(hit.point.x,-0, hit.point.z)), 0.3f);
           
        }       
    }
2

Any idea ?