C# Hit Obj in direction of Swipe...

Hello there,

Right now I'm having an issue with a script I've spent months on. Been looking for a swipe/hit direction tutorial or script online everywhere for mobile, but could only find decent 2D stuff. This is for 3D. I want to be able to hit a ball in the direction of a swipe. I've been working with a tutorial script, but my ball is acting strangely...(Being hit in opposite direction of the swipe, the ball is being dragged through space in some instances) Here is my script.

 using UnityEngine;
 using System.Collections;
 
 public class kickBallScript2 : MonoBehaviour {
     
     public Vector2 startPos;
     public Vector2 direction;
     public bool directionChosen;
     private Rigidbody rb;
     private float randomSpeed;
     private float touchX;
     private float touchY;
     private float touchZ;
     public float anglex;
     public float angley;
     public float anglez;
     public float dragDistance;
 
 
     private Vector3 directionKick;
 
     void Start(){
 
         rb = gameObject.GetComponent<Rigidbody> ();
         randomSpeed = Random.Range (2, 3);
         anglex = Input.GetTouch(0).deltaPosition.x;
         angley = Input.GetTouch(0).deltaPosition.y;
         dragDistance = Screen.height * 20 / 100;  //20% of the screen should be swiped to shoot
 
         //directionKick = Camera.main.ScreenToWorldPoint(direction);
 
 
     }
 
     void Update() {
 
         //Vector3 position = Camera.main.ScreenToWorldPoint(direction,0f); from another script
         // Track a single touch as a direction control.
 
         if (Input.touchCount > 0) {
             var touch = Input.GetTouch(0);
             
             // Handle finger movements based on touch phase.
             switch (touch.phase) {
                 // Record initial touch position.
             case TouchPhase.Began:
                 startPos = touch.position;
                 directionChosen = false;
                 break;
                 
                 // Determine direction by comparing the current touch position with the initial one.
             case TouchPhase.Moved:
                 direction = touch.position - startPos;
                 break;
                 
                 // Report that a direction has been chosen when the finger is lifted.
             case TouchPhase.Ended:
                 directionChosen = true;
                 break;
             }
         }
 
             // Something that uses the chosen direction...
             touchX = direction.x;
             touchY = direction.y;
             touchZ = direction.x + direction.y;
 
 
         directionKick = new Vector3(touchX, touchY, -touchZ);
             //planB is transform.directionKick
     
 
     }

Any ideas on a simpler way to do this? Appreciate you guys in advance!