Just because we can't predict something e.g. weather and earthquakes, etc. accurately it does not mean that they are not deterministic.
I agree that the quantum world is probabilistic but due to quantum decoherence, this does not mean the macroscopic world is like the quantum world.
If you had my genes, environments, nutrients, and experiences would you not be typing these words when and where I am typing these words? If I had your genes, environments, nutrients, and experiences would I not be reading these words when and where you are reading these words?
We don't choose to be born. We don't choose our genes. We don't choose our early environments, nutrients, and experiences. Although, as an adult we may be able to change our environments, nutrients, and experiences to something different from what we got as a child. This does not apply to all adults - just the fortunate ones. So, how can we claim that we are culpable for our choices?
I do some things even though I don't want to do them. Here are some things I have done, currently do or will do even though I don't want to do them:
1. Breathe
2. Eat
3. Drink
4. Sleep
5. Dream
7. Pee
8. Poo
9. Fart
10. Burp
11. Sneeze
12. Cough
13. Age
14. Get ill
15. Get injured
16. Sweat
17. Cry
18. Suffer
19. Snore
20. Think
21. Feel
22. Choose
23. Be conceived
24. Be born
25. Remember some events that I don't want to remember
26. Forget information that I want to remember
27. Die
I can't do the following things even though I really want to do them:
1. Live forever without consuming any oxygen, fluids, or food.
2. Do things other organisms e.g. tardigrades, dolphins, chameleons, etc. can do.
3. Teleport everywhere and everywhen.
4. Prevent all suffering, inequality, injustice, and deaths.
5. Make all living things (including the dead ones and the never-born ones) forever happy.
6. Be all-loving, all-knowing, and all-powerful and make all the other beings also all-loving, all-knowing, and all-powerful.
7. Own an infinite number of universes and give all beings an infinite number of universes each for free.
Given the fact that I am constantly doing things I don't want to do and can't do what I actually want to do, how can I be a free agent who makes free choices and is culpable?
I think that only omniscient and omnipotent beings are omniculpable. Everyone else is a prisoner of causality. Our thoughts are not free from the electrochemical activities that give rise to thoughts. Our choices are not free from the electrochemical activities that give rise to choices.