(Help) I need this script to destroy all game objects in a scene.

I am trying to make the following script destroy all the balloon clones in the scene but it is not working.
If I use the line Destroy(Balloons) it gives me the error Destroying Assets is not permitted to avoid data loss.

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

public class WipeOut : MonoBehaviour
    //public GameObject WipeOutCounterInternal;
    NumOfWipeOutsCounter WipeOutCounterInternal;
    public GameObject WipeOutPrefab;
    public GameObject Balloons;
    bool allowWipeOut = false;
    public NumOfWipeOutsCounter numOfWipeOutsCounter;
    GameObject temp;

    // Start is called before the first frame update
    void Start()
        numOfWipeOutsCounter = WipeOutCounterInternal.GetComponent<NumOfWipeOutsCounter>();
        temp = GameObject.Find("Balloons" + "(Clone)");

    // Update is called once per frame
    void Update()
        if (numOfWipeOutsCounter.WipeOuts >= 0)
            allowWipeOut = true;

        if (allowWipeOut = true && Input.GetKeyDown("space"))

            if(numOfWipeOutsCounter.WipeOuts == 0)
                allowWipeOut = false;
                numOfWipeOutsCounter.WipeOuts = 0;

Many thanks,
Josh Keedy.


First, this line is not correct:

temp = GameObject.Find("Balloons" + "(Clone)");

you forget the space, it should be with a space betweeen baloons and (Clone)

temp = GameObject.Find(“Balloons” + " (Clone)");