Basically I had too much time again with Python...

lumberkek.py

import time
from mss import mss
from PIL import Image
from pynput.keyboard import Key, Controller

keyboard = Controller()
sct = mss()

# check for any "brown" pixel
def check_tree(pixels, x, y):
  for off in range(100):
    if pixels[x, y + off] == (161, 116, 56):
      return True
        
  return False

# game window
monitor = {"top": 560, "left": 824, "width": 272, "height": 170}
is_left = False

# FPS counter
frames = 0
start_time = time.time()

while True:
  sct_img = sct.grab(monitor)
  
  # Create an Image
  img = Image.frombytes("RGB", sct_img.size, sct_img.bgra, "raw", "BGRX")
  pixels = img.load()

  if check_tree(pixels, 65, 70):
    is_left = True
  elif check_tree(pixels, 190, 70):
    is_left = False

  if is_left:
    keyboard.press(Key.right)
    keyboard.release(Key.right)
  else:
    keyboard.press(Key.left)
    keyboard.release(Key.left)

  # below 0.07 was overkill
  time.sleep(0.07)
  frames += 1
  
  print(f"FPS: {float(frames / (time.time() - start_time))}")

Average FPS should be 13.76, otherwise it may press the key too early or too late.

My screen as a reference for the game window