Pomoc dla NIE-programisty - poruszanie w Unity

Witam, jak w temacie, potrzebuję poprawki kodu w unity, chodzi o poruszanie się WSADem jak w quake,doomy itd, generalnie first person shooter. Postać porusza się jak w 2d chociaż też nie do końca bo gdzieś ta myszka go lekko prowadzi, no coś jest nie tak :-) Śmiało można się ponabijać, tylko proszę o jakieś instrukcje co jest nie tak. Skrypty przepisane z yt.

Cameracontroller.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraController : MonoBehaviour
{
    public float minimumX = -60f;
    public float maximumX = 60f;
    public float minimumY = -360f;
    public float maximumY = 360;

    public float sensitivityX = 15f;
    public float sensitivityY = 15f;

    public Camera cam;

    float rotationY = 0f;
    float rotationX = 0f;

    void Update()
    {
        rotationY += Input.GetAxis("Mouse X") * sensitivityY;
        rotationX += Input.GetAxis("Mouse Y") * sensitivityX;

        rotationX = Mathf.Clamp(rotationX, minimumX, maximumX);
        transform.localEulerAngles = new Vector3(0, rotationY, 0);
        cam.transform.localEulerAngles = new Vector3(-rotationX, rotationY, 0);
    }
    // Start is called before the first frame update
    void Start()
    {
    if (Input.GetKey(KeyCode.Escape))
    Cursor.lockState = CursorLockMode.None;
    Cursor.visible = true;
    }
}
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Playercontroller.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerController : MonoBehaviour
{
    
    public float walkSpeed;
    Rigidbody rb;
    Vector3 moveDirection;

    void Awake()
    {
        rb = GetComponent<Rigidbody>();
    }

        void Update()
    {
        float horizontalMovement = Input.GetAxisRaw("Horizontal");
        float verticalMovement = Input.GetAxisRaw("Vertical");

        moveDirection = (horizontalMovement * transform.right + verticalMovement * transform.forward).normalized;
    }

    void FixedUpdate()
    {
        Move();
    }

    void Move()
    {
        Vector3 yVelFix = new Vector3(0, rb.velocity.y, 0);
        rb.velocity = moveDirection * walkSpeed * Time.deltaTime;
        rb.velocity += yVelFix;
    }


    
    // Start is called before the first frame update
    void Start()
    {
        
    }

}