Facebook Api:用图像创建帖子(PHP)

I am having troubles understanding the Facebook Api and hopefully someone can help me figuring out how to solve my problem.

What I need: Creating a Facebook Post on a FB Page with an attached Photo.

What I tried:

POST /v2.5/{page-id}/feed 

-> I can only add the image as a link

I also tried using

POST /v2.5/{page-id}/photos

and then passed the returned ID to the object_attachment parameter on the previous (feed) API call. This seems to work but it does not look like the same when posting directly on Facebook.

I have an Link "facebook.com" under the Image and when clicking on it it opens the image in the user created Album instead of a Layer. (See attached image)how it looks like

Can someone please tell me how I should proceed to post a message with an image to Facebook so it looks like it was created on FB directly?