The character doesn't jump?

Question

Unity

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

public class Controllermobile : MonoBehaviour
{
    public float speed;
    public float jumpForce;
    private float moveInput;

    private Rigidbody2D rb;

    private bool facingRight = true;

    private bool isGrounded;
    public Transform feetPos;
    public float checkRadius;
    public LayerMask whatIsGround;

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

        rb = GetComponent<Rigidbody2D>();

    }
    private void FixedUpdate()

    {
        moveInput = Input.GetAxis("Horizontal");
        rb.velocity = new Vector2(moveInput * speed, rb.velocity.y);
        if (facingRight == true && moveInput > 0)
        {
            Flip();
        }
        else if (facingRight == false && moveInput < 0)
        {
            Flip();
        }
    }
    // Update is called once per frame
    void Update()
    {
        isGrounded = Physics2D.OverlapCircle(feetPos.position, checkRadius, whatIsGround);
        if (isGrounded == false && Input.GetKeyDown(KeyCode.Space))
        {
            rb.velocity = Vector2.up * jumpForce;
        }
    }

    void Flip()
    {
        facingRight = !facingRight;
        Vector3 Scaler = transform.localScale;
        Scaler.x *= -1;
        transform.localScale = Scaler;
    }
}

Answer 1

Yes