having problems with unity voice recognition,unity voice recognition does not recognize voice

In unity, I am trying to move a simple object using this code. Not only the object does not move but also I see no log in the console. I have also checked the microphone in the setting, attached the script to the player, and checked the mic with other applications. can someone help me? Update: so I have changed the code to this to check if the start void functions well as suggested or not and yes I get the "itworked1" and "itworked2" printed to console, but nothing related to the recognized voice. I am using Unity 2019.4.13f1 personal.

 using System.Collections;
 using UnityEngine;
 using System.Collections.Generic;
 using System;
 using System.Linq;
 using UnityEngine.Windows.Speech;
 
 
 public class scrip : MonoBehaviour{
 
 
     KeywordRecognizer keywordRecognizer;
     Dictionary<string, System.Action> keywords = new Dictionary<string, System.Action>();
 
     void Start()
     {
         Debug.Log("it works?1");
         keywords.Add("forward", Forward);
         keywords.Add("up", Up);
         keywords.Add("down", Down);
         keywords.Add("back", Back);
         keywords.Add("Go", Go);
 
         keywordRecognizer = new KeywordRecognizer(keywords.Keys.ToArray());
         keywordRecognizer.OnPhraseRecognized += KeywordRecognizer_OnPhraseRecognized;
         keywordRecognizer.Start();
         Debug.Log("it worked2?");
 
     }
     private void KeywordRecognizer_OnPhraseRecognized(PhraseRecognizedEventArgs args)
     {
         Debug.Log(args.text);        
         keywords[args.text].Invoke();
     }
         private void Forward(){
         transform.Translate(1,0,0);
     }
 
         private void Back(){
         transform.Translate(-1,0,0);
     }
         private void Up(){
         transform.Translate(0,1,0);
     }
         private void Down(){
         transform.Translate(0,-1,0);
     }
         private void Go (){
         Debug.Log("Go");
     }
        
 
 
 }