Why do Muslims fall behind despite their monotheistic religion while the West is advanced?

This is the question of civilization that has been repeated through the ages, and has been invoked by ancient infidels: “Which of the two parties is better?” Material progress is not a criterion of truth, it has nothing to do with truth and falsehood, and the criterion of piety and good work. Islam founded a civilization that lasted about 1200 years, when the religion of Muslims fixed their world.