my enemy is broken

so i have an enemy with this code:

 using UnityEngine;
 using System.Collections;
 
 public class enemy : MonoBehaviour {
     [SerializeField]
     private float CrabSpeed;
 
     [SerializeField]
     private GameObject projectile;
     [SerializeField]
     private Collider2D player;
     [SerializeField]
     private LookForShootables lfs;
     [SerializeField]
     private Collider2D radar;
 
     Quaternion zrotate;
     bool lookingright;
 
     bool SeePlayer;
     bool SeePlayerShootable;
     bool Triggered;
 
 
     private float TTN;
     [SerializeField]
     private float MTTN;
     private float reloadtime = 0;
 
     // Use this for initialization
     void Shoot(float mrt)
     {
         if (lookingright == true)
             zrotate = new Quaternion(0, 0, 180, 0);
         if (lookingright == false)
             zrotate = new Quaternion(0, 0, 0, 0);
         Rigidbody bullet;
         bullet = Instantiate(projectile, transform.position, zrotate) as Rigidbody;
         bullet.AddForce(20, 0, 0);
 
         reloadtime = reloadtime + mrt;
     }
 
     void TimeToNeutral()
     {
         if (TTN != 0 && Triggered == true)
             TTN = TTN - 1;
         if (TTN == 0)
         {
             Triggered = false;
             TTN = MTTN;
         }
     }
     void OnTriggerEnter2D(Collider col)
     {
         if (col.tag == "Player")
         {
             Debug.Log("holy crap!");
             SeePlayer = true;
         }
             
     }
 
     void FixedUpdate()
     {
         SeePlayerShootable = lfs.shootables;
         //--------------------------------------
         if (lookingright == !false)
             transform.localScale = new Vector3(-3, 3, 1);
         if (lookingright == !true)
             transform.localScale = new Vector3(3, 3, 1);
         //thesearedebugs
         if (Input.GetKey(KeyCode.H))
             lookingright = true;
         if (Input.GetKey(KeyCode.G))
             lookingright = false;
         if (reloadtime > 0)
             reloadtime = reloadtime - 1;
         //*****************************************************************
         //-----------------------------------------------------------------
         //*****************************************************************
 
         if (SeePlayer == true)
         {
             Triggered = true;
             Debug.Log("triggered!!!");
         }
 
         if (SeePlayerShootable == true && reloadtime == 0)
         {
             Shoot(60);
             Debug.Log("shooting");
         }
         if (SeePlayer == false)
             TimeToNeutral();
     }
 }

and another object has this:

 using UnityEngine;
 using System.Collections;
 
 public class LookForShootables : MonoBehaviour
 {
     [SerializeField]
     private Collider2D player;
 
     public bool shootables;
 
     void OnTriggerEnter2D(Collider col)
     {
         if (col.tag == "Player")
             shootables = true;
     }
 }    
 

the game is in 2d and the problem may lie with the triggers. what am i doing incorrectly? (i've only started coding so i probably did many things incorrectly.)