Custom javascript not working mobile theme

I am using a little bit of javascript to change the place of the comment section on the mobile theme.
If I test the code on desktop it is working. But on my phone the code is not working:
I use this code:
$(window).on('scroll', function(){
const comments = document.querySelectorAll("#comments")
$('.td-related-title').prepend(comments);
});

I place it in Theme panel -> Mobile theme -> Custom javascript

If I test on desktop code is working -> https://screencast-o-matic.com/watch/cr1vDXV15q8

Hi, I solved the problem.
I used jQuery instead of $ and then the script worked.

See this -> https://mkyong.com/jquery/jquery-is-not-working-in-wordpress-solution/