Player jitters when moving.

Help!! So I have been suffering with this for the past few days. I'm not sure if I should redo the code or what, but I have made so much progress so far so I'm uncertain about doing that. I don't want to wait to long to fix this either

The goal is to have a player shoot while facing the direction of a crosshair. The player itself is shooting though, not a pistol coming from a player. The problem is, the player shakes when it moves, even though it's able to shoot perfectly. I believe the problem is that the player rotates in one script file while the player moves in the other. Let me show you:

Connected to the camera object:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PointAndShoot : MonoBehaviour
 {
     bool allowfire = true;
 
     public GameObject crosshairs, player, bulletPrefab, b;
 
     public float fireRate, bulletSpeed, currentAmmo, maxAmmo, AmountOnScreen, rotationZ;
 
     private Vector3 target;
     Vector3 difference;
 
     // Use this for initialization
     void Start()
     {
         currentAmmo = maxAmmo;
         Cursor.visible = false;
     }
 
     // Update is called once per frame
     void Update()
     {
        if (player != null)
         {
             if (Cursor.visible == false)
             {
                 target = transform.GetComponent<Camera>().ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, transform.position.z));
                 crosshairs.transform.position = new Vector2(target.x, target.y);
                 difference = target - player.transform.position;
                 rotationZ = Mathf.Atan2(difference.y, difference.x) * Mathf.Rad2Deg;
                 player.transform.rotation = Quaternion.Euler(0.0f, 0.0f, rotationZ);
             }
             if (Cursor.visible == true)
             {
                 target = new Vector3(0, 0, 0);
                 player.transform.rotation = Quaternion.identity;
             }
 
             if (Input.GetMouseButtonDown(0) && allowfire)
             {
                     float distance = difference.magnitude;
                     Vector2 direction = difference / distance;
                     direction.Normalize();
                     StartCoroutine(fireBullet(direction, rotationZ));
                     Debug.Log("Ammo: " + currentAmmo);
             }
         }
        
         IEnumerator fireBullet(Vector2 direction, float rotationZ)
         {
             if (currentAmmo > 0)
             {
                 allowfire = false;
                 b = Instantiate(bulletPrefab, player.transform.position, Quaternion.identity) as GameObject;
                 //b.transform.position = player.transform.position;
                 //b.transform.rotation = Quaternion.Euler(0.0f, 0.0f, 0.0f);
                 b.GetComponent<Rigidbody2D>().velocity = direction * bulletSpeed;
                 yield return new WaitForSeconds(fireRate);
                 currentAmmo--;
                 allowfire = true;
             }
         }
     }
 
    public float AmmoToGive(float ammoGiven)
     {
         if(currentAmmo < maxAmmo)
         {
             if(ammoGiven <= 0)
             {
                 return ammoGiven;
             }
             if(currentAmmo + ammoGiven <= maxAmmo)
             {
                 currentAmmo += ammoGiven;
                 return 0;
             }
             //get the difference between maxAmmo and currentAmmo
             float diff = maxAmmo - currentAmmo;
             //difference added to current ammo
             currentAmmo += diff;
             Debug.Log("Received " + diff + " bullets.");
             //return the ammo that wasn't used
             return (ammoGiven - diff);
         }
         return ammoGiven;
     }
 }

Connected to the Player:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 
 public class PlayerMovement : MonoBehaviour
 {
     //public Image healthBar;
     public int playerMaxHealth = 100;
     public int playerCurrentHealth;
     public int dmg;
 
     public float mSpeed;
     Rigidbody2D rbody;
 
     public Slider healthbar;
     public bool alive;
 
     // Start is called before the first frame update
     void Start()
     {
         playerCurrentHealth = playerMaxHealth;
         rbody = GetComponent<Rigidbody2D>();
         alive = true;
     }
 
     // Update is called once per frame
     void Update()
     {
         //movement
         float moveX = Input.GetAxis("Horizontal");
         float moveY = Input.GetAxis("Vertical");
     
         Vector2 move = new Vector2(moveX,moveY);
         rbody.velocity = move * mSpeed;
 
         healthbar.value = playerCurrentHealth;
     }
 
     void OnCollisionEnter2D(Collision2D other)
     {
         if (other.collider.CompareTag("Enemy"))
         {
             int health = GetDamaged(dmg);
             Debug.Log("Health is now:" + health);
             if (health <= 40 && health != 0) {
                 Debug.Log("Warning, critical damage!");
             }
             if (health <= 0) {
                 healthbar.value = 0;
                 Destroy(gameObject);
                 alive = false;
                 Time.timeScale = 0;
                 Debug.Log("Game over.");
             }
         }
     }
 
     public int GetDamaged(int attackdmg)
     {
         playerCurrentHealth -= attackdmg;
         return playerCurrentHealth;
     }
 }