Camera Collision Doesn't Work

Hi,
For a long time I'm trying to make third person camera in Unity. After copy-pasting some scripts from the internet it was almost done, the camera worked and didn't colliding with the objects but later i found better camera script and camera collision suddenly stopped work. I tried to solve it by myself but after all night trying I decided to ask someone more experienced.
Camera Parent Script:

Code (CSharp):

1. public class MyMovingCamera : MonoBehaviour
2. {
3.     [Header("My Vars")]
4.     public Transform player;
5.     public float smoothness = 0.125f;
6.     public Vector3 offset;
7.     public float mouseRotation;
8.     Vector2 rotation = Vector2.zero;
9.  
10.     void Start()
11.     {
12.         Cursor.lockState = CursorLockMode.Locked;
13.         Cursor.visible = false;
14.         rotation.y = player.transform.eulerAngles.y;
15.     }
16.  
17.     void LateUpdate()
18.     {
19.         rotation.y += Input.GetAxis("Mouse X") * mouseRotation;
20.         offset = Quaternion.AngleAxis(Input.GetAxis("Mouse X") * mouseRotation, Vector3.up) * offset;
21.      
22.         Vector3 destinyPosition = player.position + offset;
23.         Vector3 smoothPosition = Vector3.Lerp(transform.position, destinyPosition, smoothness);
24.         transform.position = smoothPosition;
25.         transform.LookAt(player);
26.         player.transform.eulerAngles = new Vector2(0, rotation.y);
27.     }
28. }

Camera Script:

Code (CSharp):

1. public class CameraCollider : MonoBehaviour
2. {
3.     public Transform referenceTransform;
4.     public float collisionOffset = 0.2f;
5.  
6.     Vector3 defaultPos;
7.     Vector3 directionNormalized;
8.     Transform parentTransform;
9.     float defaultDistance;
10.  
11.     void Start()
12.     {
13.         defaultPos = transform.localPosition;
14.         directionNormalized = defaultPos.normalized;
15.         parentTransform = transform.parent;
16.         defaultDistance = Vector3.Distance(defaultPos, Vector3.zero);
17.     }
18.  
19.     void FixedUpdate()
20.     {
21.         Vector3 currentPos = defaultPos;
22.         RaycastHit hit;
23.         Vector3 dirTmp = parentTransform.TransformPoint(defaultPos) - referenceTransform.position;
24.         if (Physics.SphereCast(referenceTransform.position, collisionOffset, dirTmp, out hit, defaultDistance))
25.         {
26.             currentPos = (directionNormalized * (hit.distance - collisionOffset));
27.         }
28.  
29.         transform.localPosition = Vector3.Lerp(transform.localPosition, currentPos, Time.deltaTime * 15f);
30.     }
31. }

 

What actually doesn't work? What are your expected results, and what are you seeing instead? Why would you want collision on a camera?

 

(https://i.ibb.co/D5vxKfR/cameras.gif)
TOP: smooth camera but camera colliding doesn't work
BOTTOM: worse camera but with working collision

 

Unless you just want to do it yourself from scratch, I suggest learning how to use Cinemachine. It's free, does some awesome stuff with cameras, and has a camera collider that works pretty well.