So then evil is inherent and already exists from our free will and doing the opposite of good with that will?
I don't understand that ...
If you define evil as "the possibility not to do right", then yes.
But I don't think this is evil, as in "wrong", I think this is freedom, and freedom is right.
On the contrary, I define evil as "do something that is not right", and this does not exist until you actually do it.
God created Lucifer and God created the possibility (by creating freedom), but Satan is the first to actually do it, and then the word "sin" or "evil" could be used to define someone's works.
No, I disagree that God created moral evil, but he creates evil (Isa 45.7) as in bad experience. He creates death, and sufferings in the judgment, etc.: this is the evil he creates, not moral evil. Indeed, in the context of Isa 45.7, evil is opposed to peace and not to righteousness, nor to justice.
God says in Jeremiah also which kind of evil he makes:
Jer 44:27
27- Behold, I will watch over them for evil, and not for good: and all the men of Judah that are in the land of Egypt shall be consumed by the sword and by the famine, until there be an end of them.
This is justice, not moral evil. What God does there is the right thing, even if it is evil = hurtful. I don't know if in English you use "evil" this way, but this is used like this in Hebrew (and in French for exemple ^^)
Anyway, this is just my thoughts on the matter