Segey K.

from seleniumwire import webdriver
from fake_useragent import UserAgent
from selenium.webdriver import FirefoxProfile

seleniumwire_options = {
        'proxy': {
            'http': f'http://'
                    f'{proxy_data["username"]}:{proxy_data["password"]}@'
                    f'{proxy_data["proxy_address"]}:{proxy_data["ports"]["socks5"]}',
            'https': f'https://'
                     f'{proxy_data["username"]}:{proxy_data["password"]}@'
                     f'{proxy_data["proxy_address"]}:{proxy_data["ports"]["socks5"]}',
            'no_proxy': 'localhost,127.0.0.1,dev_server:8080'
        }
    }

profile = FirefoxProfile()
user_agent = UserAgent().random
profile.set_preference("general.useragent.override", user_agent)

options = Options()
options.add_argument('--headless')

driver = webdriver.Firefox(
        firefox_profile=profile,
        options=options,
        seleniumwire_options=seleniumwire_options
    )
driver.get('http://<your_url>')