I’m new to Unity and C# and I’m trying to create a platformer, I’m creating game controls for running right and left and for jumping, if running works well, then jump only responds to 1 press out of 5 for example. So I can’t “spam” jumps. How to fix it?

Here’s the code

using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;

public class Player : MonoBehaviour
{
    Rigidbody2D rb;
    public float speed = 8;
    public float jumpHeight = 13;
    
    // Start is called before the first frame update
    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
    }

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

    void FixedUpdate()
    {
        rb.velocity = new Vector2(Input.GetAxis("Horizontal") * speed, rb.velocity.y);
        if (Input.GetKeyDown(KeyCode.Space))
            rb.AddForce(transform.up * jumpHeight, ForceMode2D.Impulse);
    }
    void Flip()
    {
        if (Input.GetAxis("Horizontal") > 0)
            transform.localRotation = Quaternion.Euler(0, 0, 0);
        if (Input.GetAxis("Horizontal") < 0)
            transform.localRotation = Quaternion.Euler(or 

I tried assigning another button to jump, but it doesn’t help