Survival Shooter Glitch has me stumped

I started following the survival shooter tutorial today and at the second video i had a glitch, whenever my character moves, it creates duplicates. the picture can show you better than i could tell you.

Could it be my computer, unity, or did I just miss something?
I tried following the video here’s my code

using UnityEngine;

public class PlayerMovement : MonoBehaviour
{
    public float speed = 6f;

    Vector3 movement;
    Animator anim;
    Rigidbody playerRidgidbody;
    int floorMask;
    float camRayLength = 100f;

    void Awake()
    {
        floorMask = LayerMask.GetMask("Floor");
        anim = GetComponent<Animator>();
        playerRidgidbody = GetComponent<Rigidbody>();

    }

    void FixedUpdate()
    {
        float h = Input.GetAxisRaw("Horizontal");
        float v = Input.GetAxisRaw("Vertical");

        Move(h, v);
        Turning();
        Animating(h,v);
    }
    
    void Move(float h, float v)
    {
        movement.Set(h, 0f, v);
        movement = movement.normalized * speed * Time.deltaTime;
        playerRidgidbody.MovePosition(transform.position + movement);

    }
    void Turning()
    {
        Ray camRay = Camera.main.ScreenPointToRay(Input.mousePosition);
        RaycastHit floorHit;
        if ( Physics.Raycast(camRay, out floorHit, camRayLength, floorMask))
        {
            Vector3 playerToMouse = floorHit.point - transform.position;
            playerToMouse.y = 0f;
            Quaternion newRotation = Quaternion.LookRotation(playerToMouse);
            playerRidgidbody.MoveRotation(newRotation);
        } 
    }
    void Animating(float h, float v)
    {
        bool walking = h != 0f || v != 0f;
        anim.SetBool("IsWalking", walking);

    
    }
}

i also tried theirs but it does the same thing.
i dont know what it is but, thank you for your time and effort.

I know as much now as i did when i asked but its working now no dupes soooo… no clue. but just keep working like its not happening and it goes away?