If there was no God, there would be no atheists!
Creation is proof of a Creator, just like a building is proof of a builder. It is logic.
One man said, "To prove there is a God, all you need is a brain that works and eyes that see!" It is obvious.
Everywhere you look there is proof.
You can also ask God to show you that He is real. If you sincerely ask Him, He will answer and show you.
The Bible says fools think there is no God.
It also says in
Rom 1:18-20 For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold the truth in unrighteousness;
For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:In simpler paraphrased words "But God shows his anger from heaven against all sinful, evil men who push away the truth from them. For the truth about God is known to them instinctively; God has put this knowledge in their hearts. Since earliest times men have seen the earth and sky and all God made, and have known of his existence and great eternal power. So they will have no excuse (when they stand before God at Judgment Day). (The Living Bible)