Simple animation not playing using animation.Play();

I have two of the following, one for the left and one for the right. This moves the players position. There is a problem with the animation not playing though. Ive used javascript for it in the past and assign

 var Animator : GameObject;

Which i dont think you do for c#?

Any help is appreciated, thanks.

 using System.Collections;
 
 public class right_Movement : MonoBehaviour {
     
     public Texture2D button1; // Inital texture for the button
     public Texture2D button2; // Once pressed texture
     public GameObject Player; // Declares the player from a gameobject 
     public int speed;
     public Animator anim;
 
     void Start () 
     {
         anim = gameObject.GetComponent<Animator>();
         guiTexture.texture = button1; // gui texture is made into button1
     }
     
 
     void Update () // If the screen is touched 
     {
         foreach (Touch touch in Input.touches)
         {
             if (guiTexture.HitTest(touch.position) && touch.phase != TouchPhase.Ended) // If the gui texture is touched then
             {
 
                 guiTexture.texture = button2; // The button changes to button2
 
                 anim.SetBool ("run_right", true);
             
                 Player.transform.Translate(Vector3.right * speed * Time.smoothDeltaTime); // Player slowly moves to the right
 
 
 
                 
                 
             }
             else if (guiTexture.HitTest(touch.position) && touch.phase == TouchPhase.Ended) // until the player stops touching the screen
             {
                 guiTexture.texture = button1; // gui texture reverts back to the original 
 
                 anim.SetBool ("run_right", true);
 
             }
         }
     }
 }