You can't even seem to think through the fact that you know that you aren't an atheist.
There are different kinds of atheists, I'm an atheist that is also agnostic. I'm a negative atheist, basically. I don't believe that anything exists except when there's convincing proof that it actually exists. So, by default, things don't exist, and if you want me to think that something exists, you have to prove it to me.
Where do you live? A house? An apartment? Take a look at the wall. If it is painted, maybe nothing exists behind the surface of the paint, because that's all you can see, right? What you can see is all there is convincing proof of, right? The rest of it is a guess, right?
I'm not interested in convincing you of anything. You have talked yourself out of being an atheist. All I have shown you is that you have done this. If you don't like the idea, talk yourself back into the idea that you are an atheist.
If you were a bit smarter, you might realize that authors of proofs are simply observers of proof, who are writing down what they observed. If you understood this, you might be smart enough to think through the observations, yourself, to see that God is real.
It's a curious thing that you talk about "if you were a bit smarter" when obviously you're lacking in that aspect. I mean, I've read the "proof" you linked and it's really not convincing. The only thing it convinced me of is that the author and anyone that believes in that "proof" is so full of bullshit that they can't see through it. There are so many contradictions and fallacies in the "proof" that I have serious doubts on your intelligence and sanity.
You have to have a foundation somewhere. It can't be the idea that the only things you believe are things that have convincing proof behind them. Why not? Because most of this would doesn't have any convincing proof behind it. You saw it the first time, and that's all you think you need, to know it exists.
You hop into the car, turn the key, move the shifting lever, stomp on a couple of pedals, and drive away. Is that really proof of a car? The engineers and mechanics who built the thing will tell you a proof way different than yours. Whose is more substantial, yours or theirs?
If you can't even open your mind enough to realize that the universe is a machine, and that machines are built by someone, no wonder that you can't find any proof for God. If you can't think about combining cause-and-effect with complexity and with entropy, how in the world are you ever going to realize that they can't exist like they do in the universe without Something making them? And the Something fits the description of the thing we call God.
Continue on in your ignorance. It's okay. People aren't made to know everything about everything.