I'm not able to use python requests session cookies in selenium

The PHPSESSID cookie is stored twice because you open the page twice - first time you open the page with empty cookie jar, whereas the server sets the first insecure PHPSESSID cookie, then you copy the second one from the requests.Session. Clear the cookies once you land on the host; in the example below, I navigate to https://www.sotf.com/404 as 404 pages are usually faster to load, clear the default cookies, then copy cookies from requests' cookie jar:

import contextlibimport requestsfrom selenium import webdriverfrom time import sleep@contextlib.contextmanagerdef init_driver():    d = webdriver.Chrome()    yield d    d.quit()if __name__ == '__main__':    headers = {        'accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3',        'accept-encoding': 'gzip, deflate, br',        'accept-language': 'en-US,en;q=0.9,de;q=0.8',        'sec-fetch-mode': 'navigate',        'sec-fetch-site': 'none',        'upgrade-insecure-requests': '1',        'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36',    }    params = {        'RwDet': 'true',        'articoli_ID': '17911',    }    s = requests.Session()    s.get('https://www.sotf.com/en/nike/man/footwear/nike--joyride--cc3--setter--sneakers--at6395.html', headers=headers, params=params)    print('cookies in requests jar:')    for c in s.cookies:        print(c)    with init_driver() as driver:        # 404 pages are usually faster to load        driver.get("https://www.sotf.com/404")        driver.delete_all_cookies()        for cookie in s.cookies:            driver.add_cookie({                'name': cookie.name,                'value': cookie.value,                'path': '/',                'domain': cookie.domain,            })        driver.get("https://www.sotf.com/")        print('cookies in selenium jar:')        for c in driver.get_cookies():            print(c)

Output:

cookies in requests jar:<Cookie __cfduid=d54b8f9098af12dee16136e4dc641f74e1567012133 for .sotf.com/><Cookie PHPSESSID=mn28k5ta3ghfc77qb4nl23tga6 for www.sotf.com/>cookies in selenium jar:{'domain': 'www.sotf.com', 'expiry': 1598548157, 'httpOnly': False, 'name': 'cb-enabled', 'path': '/', 'secure': False, 'value': 'enabled'}{'domain': 'www.sotf.com', 'httpOnly': False, 'name': 'PHPSESSID', 'path': '/', 'secure': True, 'value': 'mn28k5ta3ghfc77qb4nl23tga6'}{'domain': 'sotf.com', 'httpOnly': False, 'name': '__cfduid', 'path': '/', 'secure': True, 'value': 'd54b8f9098af12dee16136e4dc641f74e1567012133'}