I think I interpret Elizabeth's personality completely differently than Austen intended

I should be ashamed of this as a lifelong bookworm, but I first read Pride and Prejudice (my first Austen novel) in a class in undergrad. At some point during said class, I can't remember how or where or when, but it hit me I was reading and imagining Elizabeth differently than Austen intended.

So Elizabeth's main trait is supposed to be her "liveliness." She's witty and extroverted and funloving with a great sense of humor and inclined to be happy and in good spirits and not dwell on things that make her sad.

I... somehow missed all that when I first met her, and I think it's because of her snarky dialogue. I'm used to snarky characters being the quiet, deadpan, introverted, cynical, exasperated, fed up, "surrounded by idiots," calm-in-the-midst-of-chaos, sighing "Why me?" and "Here we go again" characters. The snarky characters I'd met before were always the ones leaning against the wall with their arms crossed and rolling their eyes at the absurdity around them.

So that's how I instinctively pictured Elizabeth since we see her being snarky and sarcastic and savage almost from the moment we meet her: "I give you leave to like him. You have liked many a stupider person." Without trying to, I instinctively heard that line in the voice Cricket Leigh used for Mai on Avatar: The Last Airbender, and... the image stuck (personality-wise). I always knew Elizabeth enjoyed dancing at balls and traveling with her relatives and making new friends and teasing Mr. Darcy when she's dancing with him or playing the piano for him and could easily see that she finds it easy to laugh and enjoy herself and enjoy socializing, but I still saw that "observing the absurdity of others around her and proverbially rolling her eyes at it and snarking about it" attitude in her, and it became the most prominent part of her character for me.

If I were a movie director, I would have ended up portraying the character of Elizabeth more as the cynical, "Get me out of this world", face-palming, observing snarker rather than the lively fountain of wit and friendliness I think Austen intended.

Just sharing what stood out to me about Elizabeth and wondering if I'm alone, I guess.