Why is queryselectorAll showing one element??Not working

Question

https://code.sololearn.com/WVdQOl595Kvc/?ref=app

Answer 1

Perhaps reading this might help you:
https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelectorAll

Answer 2

Got it
I just made a mistake and queryselectorAll the container not the intended elements inside