Reading a book from every EU country - Looking for Recommendations

One of my long-term goals is to read a book from every EU country. It's not something Im actively working for already, but something I want to have in mind when choosing my next book. Meaning, I don't want to read books I won't like just to complete the list but I do want to maybe incorporate them in my TBR and read ones that I find interesting.

In terms of my taste in books, I love the classics, my favourites being War and Peace and Crime and Punishment. I also love dystopian books, but no fantasy (except LOTR and ASOIAF). I love a book with morally grey characters, where every person feels real, not just good or bad. Im okay with a bit of romance in my books but don't love a book that's strictly a romance.

These are some of the books from EU countries I've read or have in my TBR, I would really appreciate suggestions from others that I can start incorporating in my TBR (as you can seem I still have a long way to go, but this is not something for the next few months, but for the next few years):