Interesting, you choose the two most basic, and least interesting Twain offerings. Austin was a true dud. Ive found that Twain is more for thinkers,,, and Austen is more like an opiate for depressed women.
Twain wrote eloquently about the world, cultures from all over, languages, the ignorance of anti Semitism, China in the era of the Boxer rebellion, Indians, immigration, the universe, history, metaphysics, and everything that drives man,,,, greed, influence, ignorance, kindness, work, laziness, brilliance, etc.
And then we have Austen, and her thousand pages of he loves me, he loves me not drivel.
Oh, I’ve read almost everything Twain wrote at one time or another. Some was pretty good, some rather mediocre.
But now, if you think that “Huckleberry Finn” was uninteresting (I’m willing to let “Tom Sawyer” pass), then you and I have very few points of literary tastes where we can intersect.