Proving God Existence

[Chas]

So when god says water he doesn't mean water.

When god says "out of nothing" he doesn't actually mean out of nothing.

Yes,
When God talkes about something beyond the universe, it doesn't mean exactly what we know
Only some similarity to the word

This verse tends to imply then that there was 3 things in the beginning, god, water and a throne. But then again the word throne probably doesn't mean throne, knowing how the quran works. Words don't actually mean what they say.

Exactly, everything outside the universe is unique it is not similar to anything we know

You can't possibly know any of this - you have no experience with it, you have no evidence of it.
You have thrown reason out the window.