C# 2D Shooting a bullet based on player direction

I'm fairly new to unity so this probably isn't the best way to do this but the bullet goes in the right direction but if the player changes direction, the bullet changes direction, I knew this would happen but I have no solution to fix it. Thanks!

Player Code:

 using UnityEngine;
 using System.Collections;
 
 public class Player : MonoBehaviour {
 
     public int direction = 0;
     public float speed = 0;
     public int mana = 0;
     public Bullet myBullet;
     public KeyCode shoot;
     public KeyCode moveUp;
     public KeyCode moveDown;
     public KeyCode moveLeft;
     public KeyCode moveRight;
 
     // Use this for initialization
     void Start () {
     }
     
     // Update is called once per frame
     void Update () {
         Movement();
         Shoot();
 
     }
     void Shoot () {
         if (Input.GetKey(shoot) && mana > 0)
         {
             Instantiate(myBullet);
             mana -= 1;
         }
     }
     void Movement () {
         if (Input.GetKey(moveUp))
         {
             transform.Translate(Vector2.up * speed);
             direction = 1;
         }
         if (Input.GetKey(moveDown))
         {
             transform.Translate(Vector2.down * speed);
             direction = 2;
         }
         if (Input.GetKey(moveLeft))
         {
             transform.Translate(Vector2.left * speed);
             direction = 3;
         }
         if (Input.GetKey(moveRight))
         {
             transform.Translate(Vector2.right * speed);
             direction = 4;
         }
     }
 }
 

Bullet Code:

 using UnityEngine;
 using System.Collections;
 
 public class Bullet : MonoBehaviour
 {
     public float speed = 1;
     // Use this for initialization
     void Start()
     {
         GameObject player = GameObject.Find("Player");
         Transform playerTransform = player.transform;
         // get player position
         Vector2 position = playerTransform.position;
         transform.position = new Vector2(position.x, position.y);
     }
 
     // Update is called once per frame
     void Update()
     {
         GameObject myPlayer = GameObject.Find("Player");
         Player player = myPlayer.GetComponent<Player>();
         if (player.direction == 1)
         {
             ShootUp();
         }
         else if (player.direction == 2)
         {
             ShootDown();
         }
         else if (player.direction == 3)
         {
             ShootLeft();
         }
         else if (player.direction == 4)
         {
             ShootRight();
         }
     }
     void ShootUp()
     {
         transform.Translate(Vector2.up * speed);
     }
     void ShootDown()
     {
         transform.Translate(Vector2.down * speed);
     }
     void ShootLeft()
     {
         transform.Translate(Vector2.left * speed);
     }
     void ShootRight()
     {
         transform.Translate(Vector2.right * speed);
     }
 }