Help to Stop Level Load Loop

Hi All,

I have just recently added to my level manager script so that once max level points are achieved on level_1 load level_2 and continue points to level_2 from level_1.

The problem is that when level_2 loads the points are shown from Level_1 but the level wont play, i know that the level is continuously loading but i am stuck on how i can stop it loading so i can play the next level?

my script is:

using System.Collections;

public class LevelManager : MonoBehaviour {

 public LevelManager levelManager;
 public int score;
 public int Score=30;
 

 private PlayerController player;

 // Use this for initialization
 void Start () {
     player = FindObjectOfType<PlayerController>();
     if (Application.loadedLevelName == "Level_1") {
         score = 0;
         saveScores();
     } else {
         score = getSavedScores();    
     }  

 }

// Update is called once per frame void Update ()

 {  
     
     saveScores();
     changeLevel();
 }
 
 public void changeLevel()
 {
     if (score >= 750)
     {

         saveScores();
         Application.LoadLevel("Level_2");  // save score before level loads & loads level
 
     }    
     if(Application.loadedLevelName == "Level_2")  //recognized the name of the level loaded & access score
     {
         getSavedScores();    
     }
     
 }
 //possible if the save functionality intreacts with this
 public void saveScores()
 {
     if (score >= 750)
     {
         // setting the score
         PlayerPrefs.SetInt("Score", score);
         
     }
 }
 public int getSavedScores()
 {
     
     int tempScore = PlayerPrefs.GetInt("Score");  
     
     return tempScore;
 }
 
 
 public  int getScore()
 {    
     
     
     return score;
 }
 public void AddPoints(int points)
 {
     score += points;
 }

 void OnGUI()
 {
     GUILayout.Label(score.ToString());
 }

 void OnTriggerEnter2D(Collider2D other)
 {
     if(other.name == "Player")    
     
     {
         Application.LoadLevel(0); //this is on death completely restart game
     }


 }

}