c – I can’t save changed values of options Dropdown in unity

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enter code here

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
using static extensionMethods;

(RequireComponent(typeof(Dropdown)))
public class ChangeLanguage : MonoBehaviour
{
    private LocalizationManager localizationManager;
    void Start()
    {
       
    }
     public void changeLanguage(int num)
     {
         Debug.Log(num);
         localizationManager = LocalizationManager.instance;
         string Langunage = "";
         if (num == 0)
             Langunage = "TM";
         if (num == 1)
             Langunage = "RU";
         if (num == 2)
             Langunage = "EN";
         if (num == 3)
             Langunage = "KZ";
         if (num == 4)
           Langunage = "TR";
        //dropdown.options.Remove(num)
        localizationManager = LocalizationManager.instance;
        localizationManager = LocalizationManager.instance;
        localizationManager.SetLanguage(Langunage);
        SceneManager.LoadScene("Loading");
     } 
   

}

strong textAfter Choosing Language By dropDown I’am doinng Reload Scene Language is translated but value of option dropdown is not Changed Can you help me po resolve that Problem