I don't think it is complicated. People make it so. Religion is people. C.S. Lewis said we should look at religion like a map. We trust someones representation of what they have found, but it isn't the thing itself.
In Christianity, God gives us two rules. Love God. Love your neighbor as yourself. Now those two rules, are somewhat intuitive (natural law). C.S. Lewis (again) in Mere Christianity, outlines his case outside of Biblical pronouncements (a holy book appealing to it's own authority is not a valid argument). A little thought should also make it obvious that you have not been able to follow those two rules. So you are on the outs with this Rule maker. The reason why Christianity was logical to me, is because God gives you your way back to him. You don't have to earn it, or make it on your own.
Also, a helpful way for me to think of God was not as a bunch of rules or buildings or people, but just as a friend to have a relationship with. And once I realized that God is all about love, then he became important to me. That is what I want to be about. Anyone who isn't about love is doing religion wrong.
I was once an atheist and a searcher. I couldn't stomach the idea of believing in something that couldn't be proven (or dis proven). I asked for years (arrogantly) for God to reveal himself to me. To use a 2x4 so there would be no question. Nothing. Then one day, I got the idea to explore faith from the perspective of holding it as a given that there was a God. (a useful method I learned from math, is to hold one parameter as a given so you can explore possibilities). At that moment he began to reveal himself to me, in unmistakable ways. A warning... If you try my experiment, be humble. You are addressing the Almighty.