Can someone help optimise this code please?

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

public class EnemyVision : MonoBehaviour
{
    private Enemy enemyScript;
    public GameObject playerCenter;
    public float range = 5.2f;
    public float fieldOfView = 45f;

    private float distanceToPlayer;
    private float angleToPlayer;
    private Vector3 targetDirection;
    private RaycastHit whatHasBeenHit;


    private void Start()
    {
        enemyScript = GetComponent<Enemy>();
        if (playerCenter == null)
        {
            playerCenter = GameObject.FindWithTag("Player");
        }
    }
    
    void Update()
    {
        targetDirection = playerCenter.transform.position - this.transform.position;
        //
        angleToPlayer = Vector3.Angle(targetDirection, transform.forward);
        //
        distanceToPlayer = Vector3.Distance(playerCenter.transform.position, this.transform.position);
        //
        Debug.DrawRay(this.transform.position, transform.forward * range, Color.green, 1, true);
        //

        //
        if (angleToPlayer < fieldOfView && distanceToPlayer < range )
        {
            //

            //
            if (Physics.Raycast(this.transform.position, targetDirection, out whatHasBeenHit, range))
            {
                //
                if (whatHasBeenHit.collider.gameObject.tag == "Player")
                {
                    Debug.DrawRay(transform.position, targetDirection, Color.red, 1, true);
                    Debug.Log("seen player");
                    //
                    enemyScript.state = 2;
                }
                else 
                {
                    //
                    enemyScript.state = 1;
                }
            }   
        }
    }
}