JCepc

All humans are born with an animal nature. The modern versions of the NewTestament calls that nature sinful. The Apostle Paul uses the term 'sinful-nature' over a dozen times in his letters, but mostly in the book of Romans.

Satan's sinful nature is a spiritual representation of our sinful nature (I love me, who do you love)? You see, we all were given a freewill which God can not violate and still call Himself a God of love. Love cannot force anyone to do good/love against their will.

Why were we given a freewill? Because it was necessary for us to choose God's ways wihile we still were in the control of our sinful human nature. And by choosing God instead of obeying our sinful nature, we in the stroke of a decision can/will now live to please God through Christ, through faith.

God had to permit evil in order to allow us to make a choice. And no, God cannot control evil at this time without taking away our freewill, since evil has its earthly origin with us humans, even though it is inspired by the devil.

And yes, God does, at times, use evil to His advantage, especially in the Old Testament. When He said to the nation of Israel "I will send a nation more wicked than yourself to come and destroy you." In that case, The Lord was using evil to fulfill His good purpose.

And no, God never creates evil per se, since He is a God of love, again, although He may us it to our and His advantage.