Gaudium et Spes
https://www.vatican.va/archive/hist_councils/ii_vatican_council/docuмents/vat-ii_const_19651207_gaudium-et-spes_en.html
This is the docuмent that appeared to change the Church to be man-centered (a freemason inspired debaucle).
This is the docuмent I read to remind me why my family has made the choice to go to a Mass that appears to be outside of Rome.