When we see half moon, why is it always the lower half

Even if we see a crescent moon, always the lower circumference is visible. Why we never see this? PS: this image is vertically inverted.

When we see half moon, why is it always the lower half? - Astronomy Stack Exchange

When we see half moon, why is it always the lower half? - Astronomy Stack Exchange

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amateur observing - Why can I see sometimes a horizontal half moon instead of a vertical one? - Astronomy Stack Exchange

amateur observing - Why can I see sometimes a horizontal half moon instead of a vertical one? - Astronomy Stack Exchange

When we see half moon, why is it always the lower half? - Astronomy Stack Exchange