give me code for unity jumping in csharp

main.cs
public class Player : MonoBehaviour
{
    public float jumpForce = 10f; // how high the player jumps
    public Rigidbody2D rb; // reference to the player's Rigidbody2D component

    private bool isGrounded = false; // whether the player is touching the ground

    void Update()
    {
        // check if the player is ready to jump
        if (Input.GetKeyDown(KeyCode.Space) && isGrounded)
        {
            // apply a vertical force that makes the player jump
            rb.velocity = new Vector2(rb.velocity.x, jumpForce);
            // player is no longer touching the ground
            isGrounded = false;
        }
    }

    void OnCollisionEnter2D(Collision2D collision)
    {
        // check if the player touches the ground
        if (collision.contacts[0].normal.y > 0.5f)
        {
            isGrounded = true;
        }
    }
}
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