Why does my swiping code not work?

Hey,
im new into Unity and coding and I wrote this code. It should let the player jump, if you swipe up (vertical) on a mobile device.
Why does this not work?
Sry for my bad english, if there are any mistakes. Im german.
An answer would be very great.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Touch_Input : MonoBehaviour
{ 
    public float jumpForce;
    public float maxSwipeTime;
    public float minSwipeTime;
    public float MinSwipeDistance;
    
    private float SwipeTime;
    private float SwipeLength;
    private float SwipeStartTime;
    private float SwipeEndTime;
    private Rigidbody2D rb;
    

    private Vector2 SwipeStartPos;
    private Vector2 SwipeEndPos;

    private void Awake()
    {
        rb = GetComponent<Rigidbody2D>();

    }

    void swipeTest()
    {
        if (Input.touchCount > 0)
        {
            Touch touch = Input.GetTouch(0);
            if (touch.phase == TouchPhase.Began)
            {
                SwipeStartTime = Time.time;
                SwipeStartPos = touch.position;

            }
            else if (touch.phase == TouchPhase.Ended)
            {
                SwipeEndTime = Time.time;
                SwipeEndPos = touch.position;
                SwipeTime = SwipeEndTime - SwipeStartTime;
                SwipeLength = (SwipeEndPos - SwipeStartPos).magnitude;

                if (SwipeTime < maxSwipeTime && SwipeLength > MinSwipeDistance)
                {
                    SwipeControl();
                }
            }
        }
    }

        void SwipeControl()
        {
            Vector2 Distance = SwipeEndPos - SwipeStartPos;
        float xDistance = Mathf.Abs(Distance.x);
        float yDistance = Mathf.Abs(Distance.y);

        float xDistance = Distance.x;
        float yDistance = Distance.y;

            if (Distance.x < Distance.y)

            {
                rb.velocity = new Vector2(rb.velocity.x, jumpForce);
            }

              
}     }

Thank you so much for replying. If I remember correctly, yesterday it didn’t work with the mouse and keyboard either. But I’ll try again today, when I have time for it.