A simple 2d player jump script for Unity 2D

2D_player_jump_script.cs

    //force the player jumps at
    public float jumpForce;

    //bool to check if player is on the gorund
    public bool grounded;

    //reference to the player rigid body 2D
    public Rigidbody2D playerBody;

    // Start is called before the first frame update
    void Start()
    {
        //get reference to players Rigidbody2D component
       playerBody = GetComponent<Rigidbody2D>();
    }

    // Update is called once per frame
    void Update()
    {
        //check if the space key is tapped and if player is on the ground
        if (Input.GetKeyDown(KeyCode.Space) && grounded)  //makes player jump
        {
            //player jumps
            playerBody.velocity = new Vector2(playerBody.velocity.x, jumpForce);
        }
    }
    
    //Check if player is on the ground

    private void OnTriggerEnter2D(Collider2D collision)
    {
		//check if the collsion is happening with a game object with "ground" tag.
        if (collision.CompareTag("ground")){
            grounded = true;
        }
        
    }

        private void OnTriggerExit2D(Collider2D collision)
    {
		//check if the collsion is happening with a game object with "ground" tag.
        if (collision.CompareTag("ground")){
            grounded = false;
        }
        
    }

Why does this not work?

Why does this not work?

In my game or yours? Without more context on what you are trying to do I'm afraid I'm not sure why it might not be working.