Why this code give home page in response?

import requests
headers = {
‘User-Agent’: ‘Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:73.0) Gecko/20100101 Firefox/73.0’
}

login_data = {
‘page’: ‘teacherActions’,
‘action’:‘login’,
‘from’:"",
‘log_email’:‘osda56867’,
‘log_password’:‘jscuu’
}

url = ‘https://instaling.pl/teacher.php?page=login
r = requests.post(url=url, data=login_data, headers=headers)

print(r.text)