So I am following a tutorial by Pretty Fly Games on how to make a 2D racing game and I have added the car controller and the car input handler like he did in the video but my car cannot move forward, only rotate.

Here is a link to the tutorial: https://www.youtube.com/watch?v=DVHcOS1E5OQ&list=PLyDa4NP_nvPfmvbC-eqyzdhOXeCyhToko.

I have no idea what to do. It works normally on his video but not in my project.

Here is the Car Controller:

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

public class CarController : MonoBehaviour
{
    [Header("Car Settings")]
    public float accelerationFactor = 30.0f;
    public float turnFactor = 3.5f;

    //Local Variables
    float accelerationInput = 0;
    float steeringInput = 0;

    float rotationAngle = 0;

    //Components
    Rigidbody2D carRigidbody2D;

    //Awake is called when the script instance is being loaded.
    void Awake()
    {
        carRigidbody2D = GetComponent<Rigidbody2D>();

    }

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

    // Update is called once per frame
    void Update()
    {
        
    }

    // Frame-rate independet for physics calculations
    void FixedUpdate()
    {
        ApplyEngineForce();

        ApplySteering();
    }

    void ApplyEngineForce()
    {
        //Crate a force for the engine
        Vector2 engineForceVector = transform.up * accelerationInput * accelerationFactor;

        //Apply force and pushes the car forward
        carRigidbody2D.AddForce(engineForceVector, ForceMode2D.Force);
    }

    void ApplySteering()
    {
        //Update the rotation angle based on input
        rotationAngle -= steeringInput * turnFactor;

        //Apply steering by rotating the car object
        carRigidbody2D.MoveRotation(rotationAngle);
    }

    public void SetInputVector(Vector2 inputVector)
    {
        steeringInput = inputVector.x;
        accelerationFactor = inputVector.y;
    }
}

And here is the car input handler:

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

public class CarInputHandler : MonoBehaviour
{
    //Components
    CarController topDownCarController;

    //Awake is called when the script instance is being loaded.
    void Awake()
    {
        topDownCarController = GetComponent<CarController>();

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

    // Update is called once per frame
    void Update()
    {
        Vector2 inputVector = Vector2.zero;

        inputVector.x = Input.GetAxis("Horizontal");
        inputVector.y = Input.GetAxis("Vertical");

        topDownCarController.SetInputVector(inputVector);
    }
}