It is one Church ... in fact, there are 22 Churches that make up the one Church.
And you, as a Roman Catholic may attend Mass at any one of those 22 Churches.
Sadly, there has been quite a bit of liturgical abuse in the Latin Church since VCII, much of which is attributable to the more 'progressive' bishops (like mine). Each bishop, however, is responsible for his own diocese and, short of committing a heretical act, there is little the pope can do to stop them.
Why Doesn't the Pope Do Something about "Bad" Bishops?
In the meantime, why not discover the beauty and rich liturgies offered up in the Eastern Catholic Churches.
To learn more about the "two lungs" of the Catholic Church, visit this link:
The Vatican II Council declared that "all should realize it is of supreme importance to understand, venerate, preserve, and foster the exceedingly rich liturgical and spiritual heritage of the Eastern churches, in order faithfully to preserve the fullness of Christian tradition" (Unitatis Redintegrato, 15).