Sprite flip movement script not working! HELP!

Hey, I am making a 2D player movement script that flips the player if he moves left and flips back if he moves right. I have created a simple script but it is not working. When I play the game the Scene view somewhat does what its supposed to but the Game view makes the player move right and teleport around when I do certain things. Thanks for your time.

 using UnityEngine;
 using System.Collections;
 
 public class PlayerController : MonoBehaviour
 {
     public float moveSpeed = 10f;
     public float jumpSpeed = 10f;
     public Transform jumpCheckerStart, jumpCheckerEnd;
     public bool Grounded = false;
 
     void Update()
     {
 
         //Next two if statements are for moving left and right. Not working???

                 if (Input.GetKey (KeyCode.D)){
             transform.Translate(Vector2.right * moveSpeed * Time.deltaTime);
             transform.eulerAngles = new Vector2(0, 0);
                         
         }
                 if (Input.GetKey (KeyCode.A)){
     transform.Translate (-Vector2.right * moveSpeed * Time.deltaTime);
     transform.eulerAngles = new Vector2(0, 180);
         }
                         
 
 
         Debug.DrawLine(jumpCheckerStart.position, jumpCheckerEnd.position, Color.red);
         Grounded = Physics2D.Linecast (jumpCheckerStart.position, jumpCheckerEnd.position, 1 << LayerMask.NameToLayer("Ground"));
     }
 
 
     //Used for checking if the player is touching the ground 
         void OnCollisionStay2D(Collision2D coll ) // C#, type first, name in second
         {
         if (Grounded == true &&(Input.GetKeyDown(KeyCode.W)))
         {
             //Jump Script
             rigidbody2D.AddForce(Vector2.up * jumpSpeed * Time.deltaTime);
 
         }
             
 
 
     
     }
 
 }

If you need any other information just post a comment and I will try to provide the information requested. Thank you for your help.