animation.play is not working (did the legacy thing)

Hi, i have a simple script that should animate my player but its not working. i read forums for a while and did the legacy option, but my character still doesn't animate, there isn't any compiling errors. Here is my script:

 using UnityEngine;
 using System.Collections;
 
 public class maincharacter : MonoBehaviour {
 
     void Start () {
     }
 
     float xSpeed = 10f;
     float zSpeed = 10f;
     public float playerMovementSpeed = 10f;
 
     void Update () {
         float deltaX = Input.GetAxis ("Horizontal") * xSpeed;
         float deltaZ = Input.GetAxis ("Vertical") * zSpeed;
 
         Vector3 trans = new Vector3 (deltaX + deltaZ ,0f,deltaZ - deltaX);
         transform.Translate (trans.normalized * Time.deltaTime * playerMovementSpeed, Space.World);
 
         animation.Play ("mcrunsw");
 
         /*if (deltaX != 0 || deltaZ != 0) {
                         animation.Play ("mcrunsw");
                 }*/
     }
     }

And here is my gameobject and animation:

Any help would be appreciated. Thanks in advance.