This could be another discussion, but I’ll mention here, just as food for thought:
There is a difference between a set of circumstances that is improbable, and a set of circumstances that is improbable and also performs a function.
The highly improbable set of circumstances regarding the diameter of the moon and the distance between Earth and the sun performs the function of allowing inquisitive, intelligent beings on the earth to observe features of the universe that would be otherwise unobservable.