Christians don’t actually care about “free will”
It’s a problem with any conversation you have with a Christian about their beliefs, they create arguments that they don’t actually care about.
If you ask a Christian if god is so all powerful and all good why does he allow evil to exist.
“Because god gave us free will”.
So if god giving humans free will is the reason evil exists (which is like blaming someone for being assaulted. There is evil because of YOU, not me, the all powerful creator god), then how can heaven exist and be all good with no evil.
It’s because there’s no free will in heaven, and Christians do not care. They love that their will and personhood will be superseded.
I remember seeing someone ask their religious mom if she was sad that he was, in her words, going to hell. And she said something to the effect of “once I’m in heaven I won’t care”.