How to grab image links correctly? My scraper only make blank folders

Question

My code is only making empty folders and not downloading images.

So, I think I need it to be modified so that the images can be clearly downloaded.

I tried to fix it by myself, but can't figure it out how to do.

Anyone please help me. Thank you!

import requests
import parsel
import os
import time

for page in range(1, 310): # Total 309pages
    print(f'======= Scraping data from page {page} =======')
    url = f'https://www.bikeexif.com/page/{page}'
    headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'}
    response = requests.get(url, headers=headers)
    html_data = response.text
    selector = parsel.Selector(html_data)

    containers = selector.xpath('//div[@class="container"]/div/article[@class="smallhalf"]')

    for v in containers:
        old_title = v.xpath('.//div[2]/h2/a/text()').get()#.replace(':', ' -')
        if old_title is not None:
            title = old_title.replace(':', ' -')
        title_url = v.xpath('.//div[2]/h2/a/@href').get()
        print(title, title_url)

        if not os.path.exists('img\\' + title):
            os.mkdir('img\\' + title)

        response_image = requests.get(url=title_url, headers=headers).text
        selector_image = parsel.Selector(response_image)
        # Full Size Images
        images_url = selector_image.xpath('//div[@class="image-context"]/a[@class="download"]/@href').getall()

        for title_url in images_url:
            image_data = requests.get(url=title_url, headers=headers).content
            file_name = title_url.split('/')[-1]

            time.sleep(1)

            with open(f'img\\{title}\\' + file_name, mode='wb') as f:
                f.write(image_data)
                print('Download complete!!:', file_name)