How to pass multiple proxies as a list but stop when it works?

Question

I have "implemented" a way to work with proxies, and python's requests library. I'm scraping a website and after a while even though I wait like 20 sec after making the next request it blocks my ip so I made this proxy code:

import requests
import time

HTTP = [list of http proxies]
HTTPS = [list of https proxies]


def try_proxies(http_proxies, https_proxies):
    for proxy_http_element in http_proxies:
        http_proxy = proxy_http_element
        yield http_proxy

    for proxy_https_element in https_proxies:
        https_proxy = proxy_https_element
        yield https_proxy


test = [p for p in try_proxies(HTTP, HTTPS)]
for proxy in test:
    print(f"{proxy}")
    proxies = {
        'http': proxy,
    }
    try:
        time.sleep(10)
        res = requests.get("site",
                           headers={
                            'User-agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:99.0) Gecko/20100101 Firefox/99.0',
                            'Origin': "https://www.car.gr",
                            "Access-Control-Request-Method": "GET",
                            'Accept-Language': "en-US,en;q=0.5",
                            'Accept-Encoding': "gzip, deflate",
                            'Request-Domain': 'domain',
                            'Site': 'car',
                            "Sec-Fetch-Dest": "empty",
                            "Sec- Fetch-Mode": "cors",
                            "Sec-Fetch-Site": "same-origin",
                            "Te": "trailers",
                            'Connection': 'close'},
                           proxies=proxies, timeout=10).text
        print("here")
        with open("anothertes.html", 'w') as testhtml:
            string = str(res)
            testhtml.write(string)
        # print(res)
    except requests.exceptions.ConnectTimeout as CT:
        print(f"well at last your tried: {CT}")

# def main():
#     try_proxies(HTTP, HTTPS)
#
#
# main()

It works at some extend as it tried to connect but since it is on a for loop it won't stop where it should stop. Can someone help me please?