the Church doesn’t “claim” it, it’s a fact of history, if you ever read the Fathers you would realize it.
the term “Catholic” is not in Scripture, much like Trinity isn’t either. But the One Church founded by Jesus is in Scripture and the term was begun by the pupils of the Apostles to distinguish the true Church, from other pretenders such as the Gnostics. Any one claiming to start a church is no more the Church, than someone claiming to be the President of the US, if they haven’t been elected.
Show me where “denominations” are in the Bible? St Paul condemned such a theory in 1 Corinthians!!
the term “Catholic” is not in Scripture, much like Trinity isn’t either.
Then you shouldn't have any trouble accepting the concept of sola scriptura, scripture alone.
If you reject that on the basis that the term itself isn't found in Scripture, then it opens the door for the legitimate rejection of all that the Catholic church claims in the way of the papacy, its preisthood, the Eucharist, the perpetual virginity of Mary, the immaculate conception, praying to saints, holy water, indulgences, annulments, and the list goes on, for that same reason.
The Catholic church is rife with doctrines and practices not found explicitly mentioned by name in Scripture and expects everyone to accept their establishment of it as authoritative on their say so.
So be consistent. Be the first Catholic to do so. Either accept sola scirptura as a legitimate doctrine based on proof texts, just like all the other doctrines the Catholic church establishes on proof texts, or reject all the other doctrines the Catholic church established on proof texts just like it rejects sola scriptura because it's *only* based on proof texts and isn't mentioned by name.
If proof texts are unreliable for one thing, it's unreliable for all.
Show me where “denominations” are in the Bible? St Paul condemned such a theory in 1 Corinthians!!
Paul condemned following men, including Peter, in 1 Corinthians 1.