Please remember that the adversary/satan/devil is a spiritual force like gravity. It has always been there. It is not some fallen angel. Lucifer is a mistake caused by the Romans either purposefully or not. Gravity makes babies stronger, it is against our muscles and makes us stonger as long as we walk upright. The adversary makes humans spiritually stronger, as long as we walk upright, holy and perfect. God created all this purposefully. The adversary was also in the beginning, God was not surprised that Adam and Eve would sin, in fact he knew the adversary would get them to fall, that is his job. All people fall and will keep falling, but it is when we get up that we get closer to God, being perfect and holy.
Throughout the Bible Satan is consistently mentioned with the use of personal pronouns, as I notice you have also done. In Isaiah 14:12-15, where he’s characterized as the king of Babylon, he’s described as having fallen from Heaven and rebelling against God, saying in his heart that he would make himself like the Most High. I agree that giving him the name Lucifer in Latin translations was incorrect, but in the Hebrew language of Isaiah 14:14 he’s called “Heyel ben Shachar” which means “shining one, son of the morning.” This is the title of a being not a force.
In Ezekiel 28:12-19 he’s characterized as the king of Tyre, and is called a created being. But as in Isaiah 14 he’s spoken of in a way that cannot describe either a human king or a spiritual force.
Job 1:6-12 describes a conversation between Satan and God. In John 12:31, 14:30, 16:11 Jesus called him the prince of this world. In 2 Cor. 4:4 Paul called him the god of this age. In 1 John 5:19 he is said to have authority over the entire world.
In Rev. 12:7-17 Satan and his angels will battle against Michael and his angels. He’ll be defeated and in a rage will go after God’s people on Earth. In Rev. 20:1-2 he’ll be captured and imprisoned for 1,000 years. In Rev, 20:7-17 he’ll be freed and make one final attempt to defeat God. He’ll be defeated again and this time he’ll be thrown into the Lake of fire forever.
To me, this doesn’t sound like the account of a spiritual force similar to gravity. It sounds like the account of a rebellious angelic being who, when he has faced his final judgment will have spent 7,000 years trying to destroy God’s creation because of his resentment over the fact that he can’t be God.
Finally, what would be God’s purpose in creating an adversarial force to send against us? According to 2 Cor. 5:17, 21 if we’re in Christ we’re a new creation, as righteous as God is. Hebrews 10:12-14 explains that by His once for all time sacrifice He has made us perfect forever. And at the rapture/resurrection we’ll be changed from mortal to immortal to become in fact what we already are in faith. Why would he consign us to a life of strife to perfect us when by just believing what He did for us we can accomplish the same thing?