Atheist friend

1. When an atheist friend and I were talking, I argued that the world is very complex, he argued that it is not necessarily so.
When I told him to give me a monthly forecast, he got a little confused and said that this is not a complexity in reality, I argue that it is a complexity in reality. I would love to hear the Rabbi's perspective.
Additionally, when I asked him if he would see a fork/scarf of the Beitar Jerusalem football team in space if he claimed that there was a creator behind it, he claimed yes, but it depends, it depends on whether I have seen such a scarf before, because if not, it could be very random, I claim that it is irrational – and what bothered him was the parallel to the reality of a creator/maker and the world.
2. That friend asked me if I believed in the flood that occurred during Noah's time, and I told him yes. When I said yes, he said that there was no geological/archaeological proof that there ever was a flood on the scale described.
I answered him that it could be a parable/belief in a certain truth, and he claimed that it is easy for Judaism when it is a little difficult to escape from parables and ideas.
I would be happy to expand on the subject, Your Honor.