This type of false logic has been examined and refuted many times. Here is one example. More at source that will help you further.
OBJECTION: The doctrine of Sola Scriptura contradicts itself. For if the doctrine is true, then it ought itself to be stated in Holy Scripture. But in fact it is not.
REPLY: We are offered an argument of the following form:
(1) Sola Scriptura = “All true propositions are stated in Holy Scripture.”
(2) Sola Scriptura is not stated in Holy Scripture.
(3) Therefore, Sola Scriptura is not a true proposition.
But in fact, the argument should be of the form:
(1) Sola Scriptura = “All truths necessary to salvation are stated in Holy Scripture.”
(2) Sola Scriptura is not stated in Holy Scripture.
(3) Therefore, Sola Scriptura is not a truth necessary to salvation.
http://www.angelfire.com/ny4/djw/lutherantheology.kiefersolascriptura.html
Best to you
I am making this statement in response to anybody and nobody.
I am a devout Catholic.
I am happy that some of the non-Catholic Christians care about the final disposition of my immortal soul.
I understand that Catholics and non-Catholic Christians have different customs.
I understand that non-Catholic Christians question some of the practices and traditions and customs of Catholics, and vice-versa.
I am really sick of non-Catholic Christians bashing Catholics and vice-versa.
Please, just pray for all Christians and allow God to do the rest.
There are too many people willing to cut off your head because you profess belief in Christ Our Savior: we therefore shouldn’t be at each other’s throats because we have differing views on the deatils of Christian worship.