Jesus defeated the devil for us. (Col. 2:14, 15) Therefore spiritual warfare is not fighting the devil. For the believer; the fight is to rest in a work that is finished, knowing that He has made me the righteousness of God in Christ. (2 Cor. 5:21)
As I like to say: “the believer’s fight is not to fight.” So stop trying to win a war that’s been won, and defeat an enemy that’s been defeated. You are the Blessed!