I am not sure you replied to the right comment since I never mentioned free will at all but was more interested in how a person believing in determinism handles the current state of science that at least suggests the existence of true randomness.
In my eyes true randomness contradicts a deterministic world, but I am interested to learn more from anyone who is more educated on this topic.
If I understand you correctly I agree with you though that what might be called free will is what happens in an individuals brain when they make a decision.
The discussion whether this decision making process in the brain can be truly free is a very interesting one, but not the one I wanted to have.
My personal layman’s opinion is that my brain has enough uniqueness to it that the decisions I make are individually mine and there are other unique people that make their own individual choices.
If those choices and decisions are truly free matters less to me as long as they are truly individual.