You err in thinking anyone is yet born again - this happens at Jesus' return for those who are his - whether dead or alive.
As you suggest, we are no longer in bondage, yet not immune from the effects of evil in the world and yet remaining within ourselves - as Paul (the apostle) aptly described. Rom 7:14++
We are only yet partly freed from deception which uses 'self' as it's primary weapon against godliness.
Ephesians 4:22 to put off your former way of life, your old self, which is being corrupted by its deceitful desires;
When we are 'born from above', as the text puts it, all sin will be behind us and we will be changed to a spirit-life as Jesus now has. Right now, we only have the spirit as a deposit 2 Cor 1:22 - this is not 'born again' as you put it.
He who has prepared us for this very thing is God, who also has given us the Spirit as a guarantee. 2 Cor 5:5
When we are, 'born from above', as Jesus says, we will have spirit life as he now does. 1 Pet 3:18 This is not the case yet, as we are still flesh.
The old man is crucified - but dies daily. Crucifixion is a process of dying - it is not death of itself. 1 Cor 15:31 Thus, it/we will not be fully dead until our change.
As Paul and others have expressed, we are no longer bound to sin by a corrupted nature inherited from Adam. God, through Christ, has placed within us a new way - of good, of peace, love etc, that is of Him, from His spirit, and not of the spirit of the world.
What has died is the deception that 'self' is the most important. God grants us a repentant heart that is willing to change and grow in grace, obedience and humble response to His calling to live like Jesus did.
But until the transformation to new life at his return, we are still fighting over evil and yearning to do good - that is God's spirit in us at work. Not an overpowering or possessing, but a help, a comfort and a power to override the corrupted nature and do good instead. It IS a struggle...
For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this world’s darkness, and against the spiritual forces of evil in the heavenly realms. Eph 6:12
For I am confident of this very thing, that He who began a good work in you will perfect it until the day of Christ Jesus. Phil 1:6
Our death in Christ is an ongoing process - but it has certainly begun. Just as a slave is set free, they have to make a new life for themselves - learning a new way to live with totally different parameters than before. They are free indeed, but still battle with the baggage and damage from their time in captivity.
Therefore, I urge you, brothers and sisters, in view of God's mercy, to offer your bodies as a living sacrifice, holy and pleasing to God--this is your true and proper worship Rom 12:1
...be transformed... v2
The process of new living is juxtaposed by the ongoing dying - every day a new opportunity to advance the good and retard the old.
The old man is still alive, but mortally wounded. There is a new spirit that is opposing the old - this state remains until our rebirth.
For the flesh sets its desire against the Spirit, and the Spirit against the flesh; for these are in opposition to one another, so that you may not do the things that you please. Gal 5:17 Rom 7:23