I heard of a conversation with the greatest guarders the time of the rasul (s.a.w.s) called Ubay. Umar ibn Khattab said to Ubay “Ya Ubay, what is taqwa?"
Deen isn't culture. It's a filter for culture, which means Deen is a codification of fitra. It gives you access to fitra. It gives you a way of understanding what your intuitive sense of right and wrong is and what is appropriate in the moment.