Don’t trust, verify.
This is verifiably a lie, the Roman Catholic Church was created because they added the Filoque heresy to the Nicene-Constantinopolitan Creed.
In the 3rd Ecumenical Council (431 AD), the church forbade and anathematized ANY additions to the Creed)
Since the western church inserted a heresy into the Creed several hundred years later, they indeed broke off from the only church that existed in the first 1000 years, the Orthodox Church.
They then added new innovative dogmas along the way, like papal infallibility.

