You might be catholic with a small c. But unless you were baptized in the Catholic Church and attend Mass weekly and receive the Sacraments, you are not a Catholic with a capital C.
I would appreciate your insight as to why you think you are a Catholic with a capital C.
I'm a member of the universal Church of Jesus Christ, the Catholic Church.
Because the Blood of Jesus makes me so.
IF THE BLOOD OF JESUS is insufficient for use of a CAPITAL C, then NO AMOUNT OF powermongering arrogance by the Vatican magicsterical will ever be sufficient in a trillion years.
But unless you were baptized in the Catholic Church and attend Mass weekly and receive the Sacraments, you are not a Catholic with a capital C.
I really don't want to get involved in this spat, but let me correct your error. The Catholic Church recognizes any trinitarian baptism (in the name of the Father, Son, and Holy Spirit [or Holy Ghost]), regardless of who performed it, as a valid sacrament that confers the grace of God. So if a baptized Protestant [or Orthodox or other Christian] (not a Mormon or Jehovah's Witness) joins the Catholic Church, such person does not receive a Catholic baptism. This convert would receive the sacrament of confirmation and admission to holy communion within the Catholic Church. And any convert, even if baptized outside the Catholic Church, is fully Catholic in every sense of the word.
Good Catholics are confirmed in the Church and attempt to understand and live according to the doctrines of the Church, insomuch as they are capable. This Catholic lifestyle includes attending Mass on Sundays and holy days of obligation and receiving the sacraments regularly (unless grave cause prohibits fulfillment of these obligations). But a Catholic also firmly commits to conduct affairs according to the doctrines of the Church (including of course a respect for the lives of fellow humans, especially innocent unborn babies).
Special provisions may apply to members of Orthodox churches who join the Catholic Church. I don't know. My understanding, which may be in error, is that they (at leat mostly) have valid sacraments, a valid claim to apostolic succession, and generally sound theology (except a few points) but are schismatic and historically somewhat excessively caeseropapist (conjoined with or even subordinate to rulers of political entities).