Hey. I am new in this field, the idea of a flat earth I really like. I read and studied many arguments on the subject and found almost all of them very relevant. Yet I have two major concerns and  if someone could explain to me, i will be very pleased.
1. The first misunderstanding relates to how the moon and the sun sets after skyline. if the Earth were flat should i should not see how the moon sets but should see her going away and getting smaller until disappears. I see the moon go down below the horizon maintaining its same size.

2. proof that the earth is not flat it is on our lunar eclipse when the sun is behind the earth and the shadow cast by the earth  on the surface of the moon is round. can someone explain to me why the shadow thrown on the surface of the moon is round?