I think it depends on what is meant by 'free will'
Our will's are tied to who we are. As in our nature. Its not in fallen human nature (will) to choose God. So when in Hell they will freely choose it as it is their nature...and they'l probably curse God all the more for it.
For those who are in Christ their nature has been changed (regeneration) so that they choose God.
So , in the need all our decisions are tied to our nature (so are they free???)
John 8:44 NIV
You belong to your father, the devil, and you want to carry out your father's desires. He was a murderer from the beginning, not holding to the truth, for there is no truth in him. When he lies, he speaks his native language, for he is a liar and the father of lies.
the opposite is true for christians their nature has been changed so their desires as adopted son/daughters has changed.
2 Corinthians 5:17
Therefore, if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come.
Ephesians 4:22-24
To put off your old self, which belongs to your former manner of life and is corrupt through deceitful desires, and to be renewed in the spirit of your minds, and to put on the new self, created after the likeness of God in true righteousness and holiness.
Romans 8:14-19
For all who are led by the Spirit of God are sons of God. For you did not receive the spirit of slavery to fall back into fear, but you have received the Spirit of adoption as sons, by whom we cry, “Abba! Father!” The Spirit himself bears witness with our spirit that we are children of God, and if children, then heirs—heirs of God and fellow heirs with Christ, provided we suffer with him in order that we may also be glorified with him. For I consider that the sufferings of this present time are not worth comparing with the glory that is to be revealed to us.
Once we understand what we mean by 'will' then we see the scriptures that bit more clear I believe. We do according to our nature so in the sense of salvation our will's are not free to chose God for we belonged to the father of lies the devil. Of course in that state we can choose what we are going to have for breakfast what colour of car we are going to buy, where we go on holiday etc. But concerning salvation our wills -will not choose God unless our nature is changed and Good by His grace does that (2 Cor 4:3-4)
basically here it is in Scripture -
Made Alive in Christ Ephesians 2:1-4
2 As for you, you were dead in your transgressions and sins, 2 in which you used to live when you followed the ways of this world and of the ruler of the kingdom of the air, the spirit who is now at work in those who are disobedient. 3 All of us also lived among them at one time, gratifying the cravings of our flesh[
a] and following its desires and thoughts. Like the rest, we were by nature deserving of wrath. 4 But because of his great love for us, God, who is rich in mercy, 5 made us alive with Christ even when we were dead in transgressions—it is by grace you have been saved.