I'm just questioning that everything is God's will.
Some might have different opinions, but here is mine. Everything that happens is NOT God's will. It was not God's will that Adam and Eve did wrong, but God gave them free will and they chose poorly. It was NOT God's will that Cain killed Abel, or that David took the wife of one of his army commanders, then sent him to the front lines where he would likely be killed. There a lot of things that happen that are NOT God's will, what He would want us to do, but because He gave us free will to choose for ourselves, we sometimes choose poorly.
That does not mean that God doesn't know what will happen, as I believe God is omniscient. So while I believe He would not have man do bad things, he knows man will.
Some people have described it as His perfect will--what He would like to happen, and His permissive will--what He allows to happen.
The Bible says that it is not God's will that any should perish, but that all should come to repentance. Sadly, not all will.
I don't know if this clears anything up for you.