It isn't real photos of Moon transiting earth, every single image of earth is the same still photo which is a 3D composite. Look at the cloud systems, they don't change at all, they are only rotating the 3D composite image of earth.
But, just because these images are faked, doesn't mean that the earth is flat.
However the proportions of the moon transiting the earth at a million miles of distance or so, is correct though. The moons diameter is about 1/4 of earths. Objects appear closer to each other when they actually are when viewed from long distances with a magnifying camera lens.
Since earths diameter is about 4x that of the moon, your notion that earth would cover a huge part of the sky from the moon is easily debunked. Take a photo of Goldie's fist as she shakes it towards the sky, at a mile distance, with the fist right between the strong magnifying camera and the moon. Now the fist would appear small vs the moon disc, and very near to the moon. Would you assume from this photo, that if you, against better judgement for sure, walks up the mile to where Goldie's fist are, would see a Moon that is covering a large part of the sky, which the photo taken a mile away would imply?
Simply the diameter of the earth in the sky from the moon would appear approximately 4 times bigger than the moon from the earth. If we ever could go there and observe it which I very much doubt we did.
Sheesh this is VERY basic stuff in understanding spatial proportions.