python 3.x – Refactor Web Scraper

I wrote a simple zoopla real estate scraper for just practicing what i learned so far in python,requests,BeautifulSoup overall web scraping fundamentals and by looking at my code i feel like there would be a better and elegant way to write it but unfortunately as a beginner i don’t know yet.So, i believe i should let experienced guys here at SO to review my code for enhancement.

import requests
import json
import csv
import time
from bs4 import BeautifulSoup as bs

class ZooplaScraper:

    results = ()

def fetch(self, url):
    print(f'HTTP GET request to URL: {url}', end='')
    res = requests.get(url)
    print(f' | Status code: {res.status_code}')

    return res

def parse(self, html):
    content = bs(html, 'html.parser')
    content_array ='script(id="__NEXT_DATA__")')
    content_dict = json.loads(content_array(0).string)
    content_details = content_dict('props')('initialProps')('pageProps')('regularListingsFormatted')

    for listing in content_details:
        self.results.append ({
            'listing_id': listing('listingId'),
            'name_title': listing('title'),
            'names': listing('branch')('name'),
            'addresses': listing('address'),
            'agent': '' + listing('branch')('branchDetailsUri'),
            'phone_no': listing('branch')('phone'),
            'picture': listing('image')('src'),
            'prices': listing('price'),
            'Listed_on': listing('publishedOn'),
            'listing_detail_link': '' + listing('listingUris')('detail')


def to_csv(self):
    with open('zoopla.csv', 'w') as csv_file:
        writer = csv.DictWriter(csv_file, fieldnames=self.results(0).keys())

        for row in self.results:

        print('Stored results to "zoopla.csv"')

def run(self):

    for page in range(1, 5):
        url = ''
        url += str(page)
        res = self.fetch(url)

  if __name__ == '__main__':
     scraper = ZooplaScraper()

Basically in this scraper i mostly did is json parsing.Problem was all the data on the website was coming from javascript under the script tag so i have to select that tag and then pass it to json.loads() and parse the json dict to find the right key value pair.