You push too hard to "prove" that there is no freedom to let the Holy Spirit guide the Catholic believer into the light and truth of the scripture.
The hierarchs are totally correct in drawing the line at some points, for instance the doctrine of the trinity. This doctrine is established in scripture though not explicitly named. To intrep the scripture differently is anathema in the catholic church (lower case intended.) Although there many not be the same hierarchies in Protestant denominations, a set of doctrines and standard bearers exist and the doctrine of the trinity is similarly established and maintained.
I think that we both agree with the understanding that sola scriptura does not ignore Christian history and tradition when seeking to understand the Scripture.
I don't push - the Catholic Church demands it. For example, can a Catholic accept that Jesus had brothers and sisters born of Mary and still be a Catholic?
You are correct. And I think would would also agree that when tradition and history run counter to scripture, that scripture is correct. Sometimes, traditions are wrong.