Sorry, this is not leading anywhere.
The screenshot you show does nowhere state whether the dimensions shown will be reached by scaling or cropping the image.
What's more: I have asked you several times how you download images from the media manager. No one else here could reproduce the problem so far, that downloading images from the media manager crops pictures.
So: How do you download images from your media manager. Tell us at which part of the media manager you point your mouse, what you then do with the mouse, and what then shows on the screen, and what you click there on. In other words: how do you download images from the media manager?