CMS Blog Post Image Not Loading on Facebook

When I copy and past the below link into facebook (to create a post) it doesn’t load the image. I can’t seem to understand what is the issue.

In incognito mode it loads a totally random image from my site which is also confusing.

End result what I’m trying to achieve is that a full picture loads on facebook, so that if people click on it, they get redirected to the blog post directly.

All help is much appreciated!

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

You can use or something similar to test your social media links. This is what shows for me OpenGraph - Preview Social Media Share and Generate Metatags - OpenGraph