How to filter the […] of the article excerpt on the latest news section

Hi!

I tried to change the […] of the excerpt on the latest news section and home archive page to “Read More”.

So, I tried this on the functions.php of my child theme:

function new_excerpt_more($more) {
	return 'Read More';
}
add_filter('excerpt_more', 'new_excerpt_more');

But, it did not work.

Please tell me how can I filter to change it.

Thanks!