game over and pause menu conflicting scripts

i realized the scripts I'm using for the game over menu and the pause menu don't work together, every time i use both in the game the pause script doesnt pause the game, it only shows the image but since im new to C# and Unity i dont know what to do about it or how to change the code in order to make both work i would appreciate some help

 public static bool GameIsPaused = false;
 
     public GameObject pauseMenuUI;
 
 
     void Start()
     {
         // Turns the image off.
         pauseMenuUI.SetActive(false);
     }
     void Update()
     {
         if (Input.GetKeyDown(KeyCode.Escape))
         {
             if (GameIsPaused)
             {
                 Resume();
             }
             else
             {
                 Pause();
             }
         }
     }
     public void Resume()
     {
         pauseMenuUI.SetActive(false);
         Time.timeScale = 1f;
         GameIsPaused = false;
     }
     void Pause()
     {
         pauseMenuUI.SetActive(true);
         Time.timeScale = 0f;
         GameIsPaused = true;
     }

GAME OVER SCRIPT

  public static bool GameIsOver = false;
 
     public GameObject gameoverUI;
 
 
 
 
     void Start()
     {
         gameoverUI.SetActive(false);
     }
 
 
     void Update()
     {
 
         if (GameIsOver)
         {
             over();
         }
         else
         {
             adelante();
         }
 
 
 
     }
 
 
 
     void over()
     {
         gameoverUI.SetActive(true);
         Time.timeScale = 0f;
         GameIsOver = true;
     }
 
     void adelante()
     {
         gameoverUI.SetActive(false);
         Time.timeScale = 1f;
         GameIsOver = false;
     }