The bad in the world is because people decide to do bad things and things like disease is nature not evil.
Would you care to give your definitions of "bad" and "evil?"
When you say, "the bad in the world is because people decide to do bad things," does that mean that you do not consider being killed in a tornado, or by a shark or bear, to be "bad?" Do you suppose those things are "just another part of life, as good as ice cream and sex?"
Now, I might agree that "evil" may imply some sort of intent, possibly by an aware intelligence, and might be thus differentiated from merely bad. But how, then, was the food chain made, if not by the God you think created everything? The hunters on the savannah in Africa, trying to find game to feed their families, were often enough the prey of lions, hyenas, or just trampled by stampeding buffalo. It would seem to me, that for anyone who believes in a creation ordered by God, that there is an intelligence and an intentionality that must be considered. And if that is the case, then the "bad" of being eaten by a shark becomes "evil" because it was in that sense intentional?
Same thing with disease -- if God did not create the organisms or the genetic slips that lead to pandemics or cancers, well where did they come from? And if God did create them -- then how are thy not evil, since they are intentional?