It's too fast to follow along, and sometimes it doesn't clearly explain why you need to add a widget when you add one. Overall, it covers a lot of content. Since it's a Flutter lecture, not a Dart or Firebase lecture, I think it might not explain everything, so I understand that the explanation is lacking, but at least for the Flutter part, it would be better if the explanation of why you add a widget was a little more detailed! Anyway, I'm proud that I completed the Instagram clone~! Thank you.