How do I change scene with by a score lesser time based / problem scene wont switch to the right scene

The score I have reach is in the if statement. The Issue I am having is not it switches to the wrong scene . The script is calling what is in the if statement. I just want to do a score less from the score reach number when timer reach zero . The score less is suppose to transition into a restart scene when timer reach zero. I have the code in the else if statement:

Here is my code :

 using UnityEngine; 
 using System.Collections; 
 using UnityEngine.UI; 
 using UnityEngine.SceneManagement;
 
 public class TestScript : MonoBehaviour 
 { 
     public MyClockScript myClock; 
     public ScoreManagerScript scoremanager; 
     public int scoreToReach = 99; // change this value to what you want 
     public int leastscore = 50; 
     public string nextScene = "FY"; // change this value to what you want
     public string restartscene = "gy";
     void Update () 
     { 
         if (myClock.m_leftTime <= 0)  
         {  
             if ((ScoreManagerScript.score >= scoreToReach) && (nextScene != ""))  
             {  
                 SceneManager.LoadScene(nextScene);  
             }  
             else if ((ScoreManagerScript.score >= leastscore) && (restartscene != ""))   
             {
                 SceneManager.LoadScene(restartscene); //enter else if code here
             }  
         }
         else  
         {       
             ; 
         } 
     }
 }