If evil exist then you must assume that good also exist.

Now to your points about God. One word. Love. Without free will love would not exist. God gave us a choice out of love to choose him. So giving us choice means we can also go the other way. So I get your sentiment. And thankfully he has a plan to do away with evil which we can choose to be a part of. If not then we can choose to be stuck in evil.

So he has already addressed the issue of evil we just overlook what he has already done by sending Jesus on his behalf.