an icon/image before the title of a page

[bustel]

hi guys

I'm stuck on a php code, I have searching over the web but nothing helps me, that's why I am here.

that's what I have at the moment, but it's not correct... It shows the image to all other titles on the frontpage, I want just the correct icon/image before the correct title.
 

if ( $show_title == 1 ) {	
	$post_id = 133; // post ID
	$width = "20px"; // width of the image
	$height = "20px"; // height of the image
	$space = str_repeat(' ', 1); // white space(s) + how much spaces
	$icoontje = get_field( 'category_icon', $post_id );
	
    $list_pages_html .= '<h3 class="page-list-ext-title"><img src="'.$icoontje.'" width="'.$width.'" height="'.$height.'">'.$space.'<a href="'.$link.'" title="'.esc_attr($page->post_title).'">'.$page->post_title.'</a></h3>';
} else {
$list_pages_html .= '<h3 class="page-list-ext-title"><a href="'.$link.'" title="'.esc_attr($page->post_title).'">'.$page->post_title.'</a></h3>';	
}

Can anybody help me please?  Thank you.

[cyberRobot]

Just to clarify, is the problem that the same icon is displayed for all titles? And you want the icon that was assigned to each title to be displayed instead. Is that correct?