May I ask? Are you working? Retired? What parish, where do you belong to? Where do you live? I won't be offended if you don't reply. I'm not trying to find you just interested in where you get your ideas from. Of course many of them have been taught but some seem really unusual to me: like the church is the only teacher for all the world. I tend to reflect on scripture more than on church. Have you studied the history of our church? I'd love to meet you. I don't argue with people in person or on line but do like to listen to others views and present mine. 
I truly did think that the church as a whole does believe doctrine changes over time but dogma does not, though the words used to present truths may change. Thinking of things like the meaning of the word gay, we must clothe our teachings in words that are understandable to each generation and culture.