How to create a prefab and then drag it by mouse

Hi , thank you for looking through this question. Now I want to init a gameobject which packed into a prefab on the position where I click and then drag it with my cursor. Because the object will be destoryed when I release the left mousebutton, so once I press the left mousebutton I'll init the gameobject and if I want to drag the button I can't release the mousebutton.

But now I can't let the gameobject go with the cursor , the following scripts have any mistakes to make it not work ?

Here is the script.NO1, this script will init a gameobject on the position where I clicked

 using UnityEngine;
 using System.Collections;
     
     public class CreateObjectAtPoint : MonoBehaviour
     {
         public Transform HelpObj;
         public GameObject clone;
         
         void Start()
         {
     
         }    
     
         public void FixedUpdate()
         {
             if(Input.GetMouseButtonDown(0))
             {
                 //Debug.Log("click");
                 Plane targetPlane = new Plane(Vector3.forward, 4.0f);
                 Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
     
                 float distance = 0;
                 targetPlane.Raycast(ray, out distance);
     
                 Vector3 clonePos = ray.GetPoint(distance);
                 //  Debug.Log("x: " + clonePos.x + " y: " + clonePos.y + " z: " + clonePos.z);
                 clone = Instantiate(HelpObj, clonePos, Quaternion.identity) as GameObject;
             }
         }
     }

And there is script NO2, this scripts will destory the object I init when I release the left mousebutton and make the object go with cursor before I release the button:

  using UnityEngine;
  using DG.Tweening;
  using System.Collections;
     
     public class FingerMove : MonoBehaviour
     {
     
         private Plane m_TargetPlane;
         private float m_swipeSpeed = 0.1f;
         private bool isMove = true;
         public static float inputX;
         public static float inputY;
     
         void Awake()
         {
     
         }
     
         void Update()
         {
            if(Input.GetMouseButtonUp(0))
             {
                 Destroy(this.gameObject);
             }
     
         }
     
         IEnumerator OnMouseDown()
         {
     
             Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
     
             Plane p = new Plane(Vector3.forward, 4.0f);
     
             float distance = 0;
     
             p.Raycast(ray, out distance);
     
             while (Input.GetMouseButton(0))
             {
                 Debug.Log("X: " + ray.GetPoint(distance).x + " Y: " + ray.GetPoint(distance).y + " Z:" + ray.GetPoint(distance).z);
                 this.gameObject.transform.position = ray.GetPoint(distance);
                 yield return new WaitForFixedUpdate();
             }
         }
     }