I think that this video might help. You should watch some of the other videos in his series “The Smoke of Satan”, since they address all sorts of issues with Vatican II and Modernism. These videos aren’t that long individually. He quotes from the Council of Trent and Church Tradition in his videos, as well as from the VII docs to demonstrate the conflict between Church dogma and the changes introduced through VII. The video I’ve linked is about how the VII docs mention that the rites for sacraments and the Mass were to be revised, which goes against the Council of Trent.