Few Images are Ignored

Hi,

How does this Sitemap is created? Is there some condition like only images of these file type or some sections are included?

I generated the sitemap https://smallbusinessweb.co/sitemap-images.xml but not all images in homepage is included by the plugin. For example, the Below image(Image link provided) which is used in the footer is ignored.

https://smallbusinessweb.co/wp-content/uploads/2022/08/certificactions-sbw.png

Also, the <loc> tag uses Page ID in the slug instead of the page name like below. Is this correct or it should have page-slug instead of page-id?

<loc>https://smallbusinessweb.co/?p=2045</loc&gt;

The page I need help with: [log in to see the link]