How to capture specific area of inactive window in python?

• it cannot bring window foreground it has to stay in the background
• it cannot use screenshot method because other windows may get in the way
• it has to be specific area with defined from top, left position to bottom,
  right position not the whole screen

I’ve managed to fulfill two first conditions however I struggle with last one, here is my code

import win32gui, win32ui
from ctypes import windll
from PIL import Image

def capture_screen():
    hwndDC = win32gui.GetWindowDC(hwnd)
    mfcDC  = win32ui.CreateDCFromHandle(hwndDC)
    saveDC = mfcDC.CreateCompatibleDC()
    rect = win32gui.GetWindowRect(hwnd)
   
    saveBitMap = win32ui.CreateBitmap()
    saveBitMap.CreateCompatibleBitmap(mfcDC, rect[2], rect[3])  # figure a way to capture only a part of the screen instead
    saveDC.SelectObject(saveBitMap)    
    result = windll.user32.PrintWindow(hwnd, saveDC.GetSafeHdc(), 2)
    bmpinfo = saveBitMap.GetInfo()
    bmpstr = saveBitMap.GetBitmapBits(True)
    image = Image.frombuffer('RGB', (bmpinfo['bmWidth'], bmpinfo['bmHeight']), bmpstr, 'raw', 'BGRX', 0, 1)
    
    win32gui.DeleteObject(saveBitMap.GetHandle())
    saveDC.DeleteDC()
    mfcDC.DeleteDC()
    win32gui.ReleaseDC(hwnd, hwndDC)

    return image

WINDOW_NAME = 'Play Chrome Dinosaur Game Online - elgooG - Google Chrome'
hwnd = win32gui.FindWindow(None, WINDOW_NAME)

screen_capture = capture_screen()
screen_capture.save('window_capture.png')

Here is the picture being saved:
Full screen dino

Here is my goal:
Desired output