The existence of God or otherwise here is kind of irrelevant, because even if we had proof of the existence of God it still wouldn't be clear what we should do about it - should we sing hymns? light incense? sacrifice goats? wear funny hats?
i read the quran to find out what i should do
So we need to believe in the Quran and not just God? - that's a big leap for Atheists. Not only God but a book too.
You see how many layers there are to this problem? Why should I believe in the quran? Why not the Bhagavad Gita? Crowley's 'Book of the Law'? The Bible? The Book of Mormon? - they all make the same claims.
And since you believe in the Quran, is your understanding of it perfect? Are you a Shiite or a Sunni? Who's interpretation is correct?
I can't speak arabic so how am I even able to hear the word of God to know what I should do? I then have to believe the translator who's just some ordinary person. I have to believe in one tradition, or one Imam who I accidentally learn about Islam from, and I have to believe in my own minds understanding (which is the least trustworthy thing in the world)