Query Loop Block – Get & display each post id

I am using the Query Loop core block to display my latest 3 CPT posts on the homepage, and I would like to retrieve the post id for each post. I want to use a shortcode to display the post id, and I have that shortcode added to the query loop.

but it keeps displaying the homepage post id, instead of each post id.

This is my code:

function dynamic_post_id_shortcode() {
  //global $post;
  //$postid=  $post->ID;
  $postid = get_the_ID();

	return $postid;
}
add_shortcode( 'dynamic_post_id', 'dynamic_post_id_shortcode' );

I want to use the shortcode to display it, so what am I doing wrong?

Thanks!