Sharing url link does not show thumbnail image on facebook but only title

I try to use FB Debug tools, it’s very useful information. It said support WebP image extension?

but the Question why some posting support ( this one showing )

this one show Image https://www.eitren.com/life-video/not-give-up-with-highly-hope-save-this-dog-in-the-hard-situation-but

this one Title only https://www.eitren.com/apps/hows-your-seo-brand-link-performance-in-serp-ranking

I’m still finding out the problem, but FB debug tools very useful

https://developers.facebook.com/tools/debug/

Thank you