Why does the 2d character fall very slowly and not jump?

Question

Unity

Gravity is normally set, if you comment out the movement line, then everything will be fine

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;
 
public class PlayeMoving : MonoBehaviour
{
    public Vector2 direction;
    public Transform transform;
    public float speed = 5f;
    public PlayerControls playerControls;
    public bool isGrounded = false;
    public Rigidbody2D rb;
    public float jumpForce = 5f;
 
    private void Awake()
    {
        playerControls = new PlayerControls();
    }
 
    public void DirectOn(InputAction.CallbackContext context)
    {
        direction = context.ReadValue<Vector2>();
    }
 
    public void Jump(InputAction.CallbackContext context)
    {
        if (isGrounded)
        {
            rb.AddForce(Vector2.up * jumpForce, ForceMode2D.Impulse);
        }
    }
 
    private void FixedUpdate()
    {
        rb.velocity = new Vector2(direction.x * speed, direction.y * speed);
    }
 
    void Update()
    {
        //transform.Translate(direction * Time.deltaTime * speed);
        //rb.MovePosition((Vector2)transform.position + (direction * speed ));
    }
 
    private void OnCollisionExit2D(Collision2D coll)
    {
        if (coll.gameObject.CompareTag("Platform"))
        {
            isGrounded = false;
        }
    }
 
    private void OnCollisionEnter2D(Collision2D coll)
    {
        if (coll.gameObject.CompareTag("Platform"))
        {
            isGrounded = true;
        }
    }
}