You aren’t alone
If some Catholic posters are to be believed, not many Catholics count as “true Catholics”, because they are heretics or automatically excommunicated or use ABC or for some other reason - which means that the head count of Catholics that gives a stat of a world-wide Catholic population of 1,300,000,000 is not 1,300,000,000 after all.
So which is it to be:
- estimation by counting heads: which includes all those Catholics who support abortion, homosexuality, practice ABC, or believe all sorts of heresies
or -
- counting only “true/faithful Catholics” as Catholic - which may cut the figure down to below 480 million, thereby leading to the conclusion that there are more Protestants than Catholics ?
Both interpretations of the stats are not possible.
It is certainly possible that millions upon millions outside the verifiable confines of the CC are Catholic in God’s eyes, even though the CC may know nothing of them - but they cannot be numbered if they are unknown. And the same reasoning applies to the not-really-true-Catholic users of ABC, etc.; they may be more really Catholic in God’s eyes than a number of “true/faithful Catholics”. But that brings us back to the stats, without giving us any way of saying what use they are as a measure of Catholicism.
All this is quite apart from the meaninglessness of mere quantity (of numbers) as a guide to quality (of Christian faith). If a plague swept away all Catholics save a dozen or so, that would not affect doctrinal principle: if the Pope is infallible, he is as infallible with a flock of two, as with a flock of 2,000 trillion. If he is not infallible even in principle, then it is immaterial how vast & numerous throughout the universe his flock may be.
Number-worship would disqualify the Apostles out of hand - if numbers prove truth, then Roman paganism in the time of the Apostles must be true, & Christian faith either one way among many, or a fiction.
Faith is not founded on anything so useless as mere bigness of numbers or geography or earthly power, but on the word of God. Every other support but that is dust & ashes.
Applying stats to what is not measurable by stats is silly. All that figures give is a very approximate head count.