re: “Actually, one’s choice or volition will always be rebellion toward God. We do not have power to be righteous.”
Yes, in the Calvinist view - God ordained man to sin. Man has not free will to do anything other than what God ordained, so therefore God is the source of evil.
No, God cannot be a source of evil. He is perfect holiness.
God allows evil...for example He allowed Satan to test Job. But Job's testing resulted in a further revelation of God's perfection to the detriment of Satan.