Facebook login extension

i am making this app in Thunkable and i want to incorporate Facebook login system, but i am unable to find an accurate one. Please provide a genuine facebook login extension for us and the community
The current available extension lets the user generate a code which he has to enter in the facebook web by himself. But i want a system where when the user clicks the facebook login button, a pop up window should appear where he can put his details and login successfully.