Evil is not his opposite. He set the conditions of reality. He 'decided' what is good and whether it be outright, opposite, or privation, He set the conditions for which we perform evil.

You'll find lots of midwit or worse Christians trying to defend the notion that God is 'goodness himself' or some such, mainly because the Bible narratively promotes it and they conflate the Bible with the Word of God. But all it (God is goodness Himself) is is narrative, as many Christians, sadly, are ontology poors just as much as little 'I get everything wrong' Jeff here.