The site 'https://sslproxies.org/' seems got updated.
Here is an updated code -
from selenium import webdriver
from selenium.webdriver.common.by import By
import chromedriver_autoinstaller # pip install chromedriver-autoinstaller
chromedriver_autoinstaller.install() # To update your chromedriver automatically
driver = webdriver.Chrome()
# Get free proxies for rotating
def get_free_proxies(driver):
    driver.get('https://sslproxies.org')
    table = driver.find_element(By.TAG_NAME, 'table')
    thead = table.find_element(By.TAG_NAME, 'thead').find_elements(By.TAG_NAME, 'th')
    tbody = table.find_element(By.TAG_NAME, 'tbody').find_elements(By.TAG_NAME, 'tr')
    headers = []
    for th in thead:
        headers.append(th.text.strip())
    proxies = []
    for tr in tbody:
        proxy_data = {}
        tds = tr.find_elements(By.TAG_NAME, 'td')
        for i in range(len(headers)):
            proxy_data[headers[i]] = tds[i].text.strip()
        proxies.append(proxy_data)
    
    return proxies
free_proxies = get_free_proxies(driver)
print(free_proxies)
You'll get an output in python dictionary like this -
[{'IP Address': '200.85.169.18',
  'Port': '47548',
  'Code': 'NI',
  'Country': 'Nicaragua',
  'Anonymity': 'elite proxy',
  'Google': 'no',
  'Https': 'yes',
  'Last Checked': '8 secs ago'},
 {'IP Address': '191.241.226.230',
  'Port': '53281',
  'Code': 'BR',
  'Country': 'Brazil',
  'Anonymity': 'elite proxy',
  'Google': 'no',
  'Https': 'yes',
  'Last Checked': '8 secs ago'},
.
.
.
}]