import requests

url = "https://oyunata.com/login "
payload = {
    "username": "test_user",
    "password": "wrong_password"
}

headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36"
}

response = requests.post(url, data=payload, headers=headers)

if response.status_code == 200:
    print("Request başarılı!")
else:
    print("Request başarısız oldu.")
Edit :
Request başarısız oldu.