In my opinion, overall the video is good both in terms of video resolution and sound. But there are some disturbing sounds from outside the room

in terms of expression, it still looks stiff and still looks like he's memorizing

The concept is good, but there are some parts where the sound is missing.

Your voice was still going up and down and your still seemed to be memorizing things.

In my opinion , your intonation needs to be improved because your speaks too fast.