What to do with the problem when parsing the site?

Question

Python

import requests
from bs4 import BeautifulSoup
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from random import choice

    
def main():
    url = '--url--'
    useragents = open('useragents.txt').read().split('\n')
    proxies = open('proxies').read().split('\n')

    proxy = {'http' : 'http://' + proxies[0]}
    useragent = {'User-Agent' : choice(useragents)}

    opts = Options()

    opts.add_argument("user-agent=" + str(useragents[0]))
    opts.add_argument('--proxy-server=http://' + proxies[0])
    driver = webdriver.Chrome(executable_path=r'--path to chromedriver--',chrome_options=opts)
    driver.get(url)
    print(driver.find_element_by_class_name('ip').text())


if __name__ == '__main__':
    main()

I use web-browser slenium to find free dates on the embassy website. After a few minutes of work,
the site does not start up and gives an error (Unable to access the site). User-agent's change, proxy purchased. How does the site determine that the bot is working?

Answer 1

by proxy IP, for example,
or not at all - it just blocks frequent attempts with IP