Instantiating for every Xpos and Zpos

Hey, Im currently working on a game for fun, I've made it so that players can login, and that their x and z Position is saved in a database, and that these coordinates can be read out by other people. link: My friend walking around

I am really close to having it show other people walking around, But the last part of the puzzle is to update (Maybe 5 times every second, it doesn't have to be 100% smooth) the position of all the players in the array.

This is my current code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class ShowOtherPlayers : MonoBehaviour {
 
     public bool MagUpdaten;
     public string[] users;
     public string Xpos;
     public string Ypos;
 
     // Use this for initialization
 
     void Start () {
         Invoke("StartUpdate", 2.5f);
     }
 
     void StartUpdate()
     {
         MagUpdaten = true;
     }
 
 
     void Update () {
         if (MagUpdaten) {
             StartCoroutine (SendData());
         }
     }
 
 
     IEnumerator SendData(){
         print ("Aan het Other Players updaten!");
         MagUpdaten = false;
 
         WWW userInfo = new WWW ("**WEBSITE HERE WITH PHP CODE TO EXTRACT INFO FROM DATABASE**");
         yield return userInfo;
         Debug.Log(userInfo.text);
         string userInfoString = userInfo.text;
         print ("online info: " + userInfoString);
 
         users = userInfoString.Split (';');
         Xpos = (GetDataValue(users[0], "Xpos:"));
         Ypos = (GetDataValue(users[0], "Ypos:"));
 
         yield return new WaitForSeconds (0.1f);
         MagUpdaten = true;
     }
 
     string GetDataValue(string data, string index){
         string value = data.Substring(data.IndexOf(index)+index.Length);
         if(value.Contains("|"))value = value.Remove(value.IndexOf("|"));
         return value;
     }
         
 }

I am wondering if anyone can point me in the right direction to make this happen. Maybe Instantiating on coordinates? im not sure how to do this. Thanks :D