Object do not stop after collision

I am using RigidBody and BoxCollider on both player and cube. Collision is detected, but player goes through the cube, while it should stop. Below is my code and screenshot from Unity.

 public class Player : MonoBehaviour
 {
     public float speed = 10;
     public Animator anim;
     private Rigidbody rb; 
     
     //for swipes 
     Vector2 firstPressPos;
     Vector2 secondPressPos;
     Vector2 currentSwipe;
     
     // Use this for initialization
     void Start ()
     {
         anim = GetComponent<Animator>();
         rb = GetComponent<Rigidbody>();
     }
 
     // Update is called once per frame
     void Update ()
     {
         detectSwipe();
     }
 
     public void detectSwipe()
     {
         float secondX;
         float secondY;
 
         const float movement = 0.5f;
         if (Input.touches.Length > 0)
         {
             Touch t = Input.GetTouch(0);
 
             if (t.phase == TouchPhase.Began)
             {
                 //save began touch point
                 firstPressPos = new Vector2(t.position.x, t.position.y);
             }
 
             if (t.phase == TouchPhase.Ended)
             {
                 //save ended touch point
                 secondPressPos = new Vector2(t.position.x, t.position.y);
                 
                 currentSwipe = new Vector3(secondPressPos.x - firstPressPos.x, secondPressPos.y - firstPressPos.y);
                 
                 //normilizing 2D vector
                 currentSwipe.Normalize();
 
                 //determine swipe and change position
                 if (currentSwipe.y > 0 && currentSwipe.x > -0.5f && currentSwipe.x < 0.5f)
                 {
                     secondY = transform.position.y + movement;
 
                     while (transform.position.y < secondY)
                     {
                         transform.position = new Vector2(transform.position.x, transform.position.y + movement);
                     }
 
                     anim.Play("player_up");
                 }
                 
                 if(currentSwipe.y < 0 && currentSwipe.x > -0.5f && currentSwipe.x < 0.5f)
                 {
                     secondY = transform.position.y - movement;
                     while(transform.position.y > secondY)
                     {
                         transform.position = new Vector2(transform.position.x, transform.position.y - movement);
                     }
                     anim.Play("player_down");
                 }
                 if(currentSwipe.x < 0 && currentSwipe.y > -0.5f && currentSwipe.y < 0.5f)
                 {
                     secondX = transform.position.x - movement;
                     while(transform.position.x > secondX)
                     {
                         transform.position = new Vector2(transform.position.x - movement, transform.position.y);
                     }
                     anim.Play("player_walking_left");
                 }
                 if(currentSwipe.x > 0 && currentSwipe.y > -0.5f && currentSwipe.y < 0.5f)
                 {
                     secondX = transform.position.x+movement;
                     while(transform.position.x < secondX)
                     {
                         transform.position = new Vector2(transform.position.x + movement, transform.position.y);
 
                     }
                     anim.Play("player_walking");
                 }
             }
         }
     }
 
     private void OnCollisionEnter(Collision other)
     {
         Debug.Log("collision");
     }
 }