Moving object to position of finger at screen

Hi. I am trying to make in-game object to move with some speed around the screen. I want to controll it by moving my finger. Start position of object is x=0 y= 0 z=0 in world and in the middle of a screen. I want object to follow my finger. I created UI image and I wanna use Vector to directions(I think it s best and easiest way, if there's another show me). My C# script attached to image:

 using UnityEngine;
 using UnityEngine.UI;
 using UnityEngine.EventSystems;
 using System.Collections;
 
 public class Kontroler : MonoBehaviour, IPointerDownHandler, IDragHandler, IPointerUpHandler {
     
     public float smoothing;
     
     private Vector2 origin;
     private Vector2 direction;
     private Vector2 smoothDirection;
     public Text tekst;
 
     
     void Awake () {
         direction = Vector2.zero;
 
     }
     
     public void OnPointerDown (PointerEventData data) {
 
         tekst.text="Pointer down";
         origin = data.position;
 
 
     }
     
     public void OnDrag (PointerEventData data) {
         tekst.text="Pointer drag";
         Debug.Log(data.position);
 
             Vector2 currentPosition = data.position;
             Vector2 directionRaw = currentPosition - origin;
             direction = directionRaw.normalized;
 
     }
     
     public void OnPointerUp (PointerEventData data) {
         tekst.text="Pointer up";
             direction = Vector3.zero;
             
 
     }
     
     public Vector2 GetDirection () {
         smoothDirection = Vector2.MoveTowards (smoothDirection, direction, smoothing);
         return smoothDirection;
     }
 }

And script attached to object:

 using UnityEngine;
 using System.Collections;
 
 public class Mover : MonoBehaviour
 {
     public float speed;
     public Kontroler panel;
     void Update ()
     {
         Vector2 direction = panel.GetDirection ();
         Vector3 movement = new Vector3 (direction.x, 0.0f, direction.y);
         GetComponent<Rigidbody>().velocity = movement * speed;
     }
 }

I am making this project for Android.