Camera flickers between scenes

So I have a camera that moves forward by set increments every time my player leaves its viewport. It works fine, except if I get my player to stand just between one viewport and the new one, the camera flickers between the two scenes. Is there a way to fix this? I have a way to set scripted camera scenes too, and those don’t experience the same flickering because I set them manually, and I have a one-way barrier that doesnt allow the player to go back once they’ve entered a scripted scene.

using UnityEngine;
using System.Collections;

public class CameraScript : MonoBehaviour 
{
 private bool isScripted=false;
 private int sceneNumber=0;
 public Transform target;
 void Update() 
 {
 //this sets the left and right border to whatever the camera can see on the left and right sides
 Vector3 rightBorder=camera.ViewportToWorldPoint (new Vector3(1,1,1));
 Vector3 leftBorder=camera.ViewportToWorldPoint (new Vector3 (0,0,0));
        
 //this makes it so that if the player hits the left or right border, the camera moves over to compensate.
 if (target.transform.position.x >= rightBorder.x && isScripted==false)
 {
 transform.position=new Vector3 (rightBorder.x + 7f, transform.position.y, transform.position.z);
 sceneNumber++;
 }
 
 
 if (target.transform.position.x <= leftBorder.x && isScripted==false)
 {
 transform.position=new Vector3 (leftBorder.x - 7f, transform.position.y, transform.position.z);
 sceneNumber--;
 }
 
 if (sceneNumber==2)
 {
 isScripted=true;
 transform.position=new Vector3 (34f, -6f, -10f);
 camera.orthographicSize=10;
 }
 

 }
 
}

just added 1 word 8)

using UnityEngine;
using System.Collections;

public class CameraScript : MonoBehaviour 
{
 private bool isScripted=false;
 private int sceneNumber=0;
 public Transform target;
 void Update() 
 {
 //this sets the left and right border to whatever the camera can see on the left and right sides
 Vector3 rightBorder=camera.ViewportToWorldPoint (new Vector3(1,1,1));
 Vector3 leftBorder=camera.ViewportToWorldPoint (new Vector3 (0,0,0));

 //this makes it so that if the player hits the left or right border, the camera moves over to compensate.
 if (target.transform.position.x >= rightBorder.x && isScripted==false)
 {
 transform.position=new Vector3 (rightBorder.x + 7f, transform.position.y, transform.position.z);
 sceneNumber++;
 }

 else if (target.transform.position.x <= leftBorder.x && isScripted==false)
 {
 transform.position=new Vector3 (leftBorder.x - 7f, transform.position.y, transform.position.z);
 sceneNumber--;
 }

 if (sceneNumber==2)
 {
 isScripted=true;
 transform.position=new Vector3 (34f, -6f, -10f);
 camera.orthographicSize=10;
 }

 }

}

i think im just going to drop the code and make it more scripted instead. thanks for the help