Moses parting the sea evidence or just made up

[Minimalist]

It's hard to leave a country you've never entered, so no exit took place. It is funny to think that you can walk all the way around the Saudi peninsula several times in forty years, meaning Moses just refused to stop and ask for directions.

Typical male.

[Gawdzilla Sama]

I don't think this guy is a troll. I also don't think anybody parted that sea.

In actual history the Egyptian empire included all of the Levant area to the Tigris River.  The lost that area and their territory stopped  at the Red Sea.  So in metaphorical terms the Red Sea was parted since it became the Eastern limit of the Egyptian empire.

And that is how you do irrelevant, folks!

[Minimalist]

But most of this stuff in terms of 1-5 first book of the bible was written i think in 600 BC

Probably was not written at all until the 3d century BC.  May have existed as oral tales for a very small community of former Persian subjects centered around a shithole called Jerusalem as later transliterated into Latin.  The earliest written evidence we have is that Greek-speaking writers translated it into the Septuagint sometime in the early 3d century BC.
The convoluted nature of the story with the contradictions and duplications is best explained by writers trying to translate and write down an oral tale which had been in circulation for some time.  In spite of jesus freak claims oral tales are not reliable.