I'm not a theologist, but here we go.
Okay, so, it's God, not god. But anyway, God is real, you're just not looking for Him.
So, which God? Well, lots of religions don't have a different God. Being a Christian, I know that the Jews and the Christian's God is the same, only the Jews don't think Jesus died for their sins. Also, lots of religions have taken our God and bent Him to their will or their culture. Some have made up different gods, TONS of religions all have that one "myth" of a universal flood... which isn't a myth and is just them knowing the flood happened, yet twisting it from the truth.
Science says God is not real because science is flawed and does NOT know everything. Also, science HAS proven Jesus existed. Science has proven a flood happened (Grand Canyon ?! How the HECK would it have been eroded if the world is thousands of years old? The flood..). . Science has proven lots of things, things that can't be explained by Darwinism or any type of human thinking: humans are flawed so our view of the world is flawed. However, God is perfect and eternal and good, and He knows all.
Yet, this brings me to the ever popular question those who don't believe in God have: "if He's so great and perfect, why is there bad things? Why is the world a bad place? Wouldn't God want us to have a great and sinless life if He is so loving and good?" The simple, short, one-word answer: sin. When Eve ate the fruit in the Garden of Eden against God's will, she disobeyed God and became sinful. Because of this, God cannot let Himself be with us due to the fact we sin, and He is perfect and cannot be spoiled by us. (He can't be spoiled anyway, I'm just saying that). Anyway, we sin, pure and simple. Those who think they're perfect are wrong. Humans are bad and good, but sin is present in all of us.
Jesus Christ died on the Cross for us to rid us of our sin. He is the ultimate show of God's love for us. Why would God send Jesus for us if we are sinful? Because He loves us. You may not notice it, you may not look for it, you may not WANT to believe it, but it's true. God loves us as His children and His creation, even more than anything else He has ever created.
So, with that out of the way, time for this question: "So, we know God is real, yeah. But what about other religions? How do you explain that?" Since forever, people have still refused God for reasons I can't really fathom, but I guess cuz they are ashamed of their sin. But everyone is aware of some type of God or being, and some people have taken this awareness and turned it into false religions. In many religions, God is the one true God, only twisted. In some religions, they are completely different.
"Okay, then, Jesus is real. okay. But what is His importance?" He is NOT a prophet, but the one way to Heaven and God. Without Him, we will die. You cant call yourself a true Christian without accepting Christ. God is real, and personally, without Him, I wouldn't be able to get through some of my life. Without God and knowing there is a beautiful place to go to after death, I feel motivated to live my life and power through. Many of you will read this and laugh, bur it's true, God is my motivation. Personally, coulda written a lot more but yeah.