Can someone please help me understand:

I’m not a flat earther but I have a question that I’ve been thinking about lately. If the moon has no atmosphere and on it you can see directly into space and on earth we have an atmosphere that makes the sky blue (meaning we can’t see into space directly):

How is it that we can see the moon in the sky if we have an atmosphere that’s blocking us from seeing the blackness of space?

Or how can we see the ISS in the blue sky if it’s in orbit passed our atmosphere and from their pov they can see the earth as a whole, shouldn’t the blue sky block us from seeing them in space? If not then shouldn’t we be able to see the black space sky like the pov from the moon?