Bug Character stopping alone

Hello, my character it's stopping alone when move.
Started when update Unity.

My script:
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Security.Cryptography;
using UnityEngine;

public class Jogador : MonoBehaviour
{

public Rigidbody2D rigidbody2d;
public float move;
private float direction;


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

}

// Update is called once per frame
void Update()
{

direction = Input.GetAxisRaw("Horizontal");
rigidbody2d.velocity = new Vector2(direction* move, rigidbody2d.velocity.y);

}
}

Someone plz help me

 

I don't understand what "stopping alone" means. What's the desired behavior?

 

i want it to move normal(left and right 2D platform), but he stoping the move by their own (sorry my english)