I’m not looking for sple language.
One sentence
That’s it
It will be either from the catechism or rhe bible
One sentence
It’s not there
Give up
It's not about whether it is in "the catechism or the bible"....it's about telling the whole truth about what the Church teaches. There is no question that the Church teaches that "outside the Church there is no salvation". Pretty much every work of apologetics I have read addresses the issue and explains what the teaching really means.
Your line of argument is intellectually dishonest.