check 10 PlayerPrefs which is Empty and Save

i coded the following code i want to check which PlayerPrefs is empty and save text from inputbox then display it in Ui text problem is Uitext3 is displaying text from Uitex2
please help i want to achieve this in more than 10 PlayerPrefs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class SaveTittles : MonoBehaviour
{
    public InputField InputsaveTittes;
    public Text SaveTittlesText1;
    public Text SaveTittlesText2;

public Text SaveTittlesText3;


    // Start is called before the first frame update
    void Start()
    {
       InputsaveTittes.Select();
        InputsaveTittes.ActivateInputField();
      

    }

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

        
    //PlayerPrefs.SetString("Now",SaveTittlesText.text);
 
       
       
       SaveTittlesText1.text=PlayerPrefs.GetString("1");

   
   
       SaveTittlesText2.text=PlayerPrefs.GetString("2");

  
       
       SaveTittlesText3.text=PlayerPrefs.GetString("3");

    
    }

    public void SaveNow(){
        

if (PlayerPrefs.HasKey ("1") == false)
{
PlayerPrefs.SetString("1",InputsaveTittes.text.ToString());


         PlayerPrefs.Save();
}

       
   else if (PlayerPrefs.HasKey ("1") == true)
{
PlayerPrefs.SetString("2",InputsaveTittes.text.ToString());

         PlayerPrefs.Save();
}
      else if (PlayerPrefs.HasKey ("2") == false)
{
PlayerPrefs.SetString("2",InputsaveTittes.text.ToString());

         PlayerPrefs.Save();
}

       
   else if (PlayerPrefs.HasKey ("2") == true)
{
PlayerPrefs.SetString("3",InputsaveTittes.text.ToString());

         PlayerPrefs.Save();
}






}
}

for (int i = 1; i < 10; i++)
{
if (PlayerPrefs.HasKey(i.ToString()) == false)
{
PlayerPrefs.SetString(i.ToString(), InputsaveTittes.text.ToString());
PlayerPrefs.Save();
}
else
{
PlayerPrefs.SetString(i+1.ToString(), InputsaveTittes.text.ToString()); // if i = 9 it will be 10;
PlayerPrefs.Save();
}
}
I didn’t check if code is working and not sure if it’s the best solution (if it’s even working).