I want this code to remain open in the background and affect the game. However, this code only works on the desktop and not in the game.

import time
import threading
import pyautogui
from pynput import mouse

press_time = None
hold_thread = None
stop_movement = False

def check_hold():
    global press_time, stop_movement
    while press_time:
        elapsed_time = time.time() - press_time
        if elapsed_time >= 0.2:
            print("Hold")
            stop_movement = False
            # Move the mouse downwards for 1 second
            pyautogui.moveRel(0, 100, duration=1)
            if stop_movement:
                return
            # Move the mouse left for 1 second
            pyautogui.moveRel(-100, 0, duration=1)
            if stop_movement:
                return
            press_time = None
        time.sleep(0.01)

def on_click(x, y, button, pressed):
    global press_time, hold_thread, stop_movement
    if button == mouse.Button.left:
        if pressed:
            press_time = time.time()
            print("Pressed")
            hold_thread = threading.Thread(target=check_hold)
            hold_thread.start()
        else:
            press_time = None
            stop_movement = True
            if hold_thread:
                hold_thread.join()
                hold_thread = None

# Set up the listener
with mouse.Listener(on_click=on_click) as listener:
    listener.join()

I am not a python expert and I wrote this code by combining codes from here and there. This code works without any problems on the desktop, but it does not work when I switch to the game. How can I make this code work while playing the game?