You have to go back to the very beginning. The thing about God's sovereign will is that He generally chooses not to enforce it Himself. God created creation, and He was in charge of it. God then created man, and yielded His sovereignty to give man authority over creation. You, Adam, are the authority. So Adam then gives that away to satan. God could have, in His sovereign power, taken it all back. But then that would put Him in charge again, and that wasn't what He wanted. His intent/will was for man to have authority.
So to restore what God intended/willed meant a man had to take authority back from satan. But what man could do such a thing? Well, only God, coming to us as a man. So the Christ comes and indeed takes back authority. But He has not returned to enforce it. Power in the heavenlies is His, but satan still runs the terra firma. That's where our 'free will' comes in. It's God's sovereign will that we participate with Him in the enforcement of His authority over creation.
I liken it as to a Sheriff. The sheriff holds the authority, but he doesn't patrol the streets chasing down perps. He has Deputies who enforce his authority for him. But the Deputies actually have no authority of their own. Christ is our sheriff, we are his deputies, charged to enforce His Will in a land run by satan until He returns.
God yields his will to give us the authority to participate in bringing His Will to bear in this world.
Including the authority to accept or refuse salvation.
But that's not going to change your mind, so that's all I'm going to say about it.
