The Catholic Church calls itself--wait for it--the Catholic Church.
All believers in Christ are part of the Church universal, the Catholic Church.
You refuse to acknowledge the facts when they’re put plainly before you. The Vatican considers your church to be, quote: “the Roman Church.” Your Pope, according to the Vatican, is considered, quote: “the Roman Pontiff.” Pope Pius XII wrote, quote: “To be Christian one must be Roman.”
These are *facts* about your church, provided by those in authority within your church. You can argue against it till you’re blue in the face, but the fact remains that you are a member of the ROMAN Catholic Church.
I agree that all Christians are members of the catholic church, i.e., the Church universal. Only some are members of your church, the Roman Catholic Church.