that would mean like good, evil also always existed. Evil having the attribute of always existing?

No, by "evil is uncreated" I meant it doesn't have ontological exitance because God created everything and it was all good. The Church fathers explain evil as the privation of the good, similar to how darkness is the absence of light. Evil and death entered the world as a result of the fall of Adam. God the Son assumed human nature (becoming the second Adam) and healed it by defeating death itself (resurrection and harrowing of hades), giving us the path to salvation and eternal life in the Kingdom of God.

The enemy can't create. Satan and his demons are mere created angels and have no real power because all power comes from God. God created man to be above the angels. This is why Satan got envious and went after man in the first place. All the enemy has is lies but as we can see, lies go a long way in this fallen world.