"I haven’t found any evidence that our Lord Christ Jesus endorsed the books . . ."
Sorry, if the standard for using contraception is that Christ nowhere condemns it, the standard for whether these books should stay in the Bible is the same. Now, where does Jesus Christ or any of the Apostles ever imply in any way that anything in the Septuagint wasn't the inspired Word of God? Christ is the same yesterday and today and forever. No changing standards.
Since there is no clear condemnation of those books of the Bible so there's no reason to throw them out of the Bible. That's the standard used when teaching that contraception is fine even after four hundred plus years of teaching that the use of contraception is a sin. So, that's the standard for the books of the Apocrypha, no clear condemnation equals acceptance.
Throwing out that portion of the Bible is just another case of someone deciding on the result they want and then choosing a standard that they can use to rationalize that result. Non-Catholic churches no longer teach that contraception is a sin because contraception is popular with the go along to get along "Christians".
Any group can claim to be Christian, but when they teach as the Truth one thing today and the opposite the next along with not even accepting the entire Bible, they're not Christians. They're under a strong delusion that keeps them on the broad road to their own destruction following Eve rather than following Jesus Christ. They refuse to surrender to Christ because they cannot let go of their Self Alone ego. That's why they're functionally identical to the agnostics and atheists in this secular humanist society.
It's also proof that anyone who wants the fullness of the Scripture and the Truth needs to reconcile them self with the One, Holy, Catholic, and Apostolic Church Jesus Christ Himself founded and stop fooling around with cults, sects, and denominational churches. They may be trying to be Bible Christians but they'll always be led astray because they put Self Alone between themselves and Jesus Christ. Such folks are gravely at risk of hearing, "I never knew you" from the same Jesus Christ they want to follow but refuse to surrender to because they love their own intellect and the enthronement of Self Alone.
I understand your acceptance of the Apocrypha as the Word of God, is premised upon formal acceptance by the RCC, which is premised upon believing Peter is placed as the head of the Church, and it is continued through Apostolic secession, forming a worldly power system, which you believe is ordained by God.
If there are contradictions in the Apocrypha, would this be ample evidence that the interpretation of an Apostolic secession from Peter is not the Kingdom of God, nor the Plan of God?