Problem of evil would only be a problem for all-good God.
However, Christian God is not all-good. He is not even more good than evil.
He is almost pure evil.
So the fact that evil exists is a clear proof that evil creator exists, and everything points to Christian God being the evil creator.
Some of you might say "But Bible says God is good".
Son, thats called lying. God who sends bears to kill children clearly wouldnt have problem with lying that he is actually good. After so many murders in the Bible, God committing the sin of lying is really not even a surprise.
Also, God said: "I made humans in my own image".
Well, humans are mostly sadists and liars. So it is very likely that Christian God is sadist and liar. He lied that he is good to torture humans even more.
Another reason why problem of evil is not a problem for Christian God is that Christian God could be incredibly stupid. He might not even understand that what he does is evil. We cant exclude the possibility that Christian God is mentally retarded.
I mean think about it, how can all powerful smart God limit himself to dealing with human problems. Its like me trying to regulate life of ants in my backyard. Would a smart person do that?
Another reason why problem of evil is not a problem for Christian God is because Christian God can change definition of good and evil. For example, he can define good as anything that pleases him, making all human suffering good.