Also: +
Elves are supposed to extremely long-lived/immortal so their personalities reflect someone who has lived hundreds of years or more. They live like they have all the time in the world. They behave differently than humans and its a bit of trope in fantasy. Kate Blanchett did an amazing job (book accurate) as Galadriel imho, but you can see that if this version of Galadriel had her own show it would be really weird.
She would speak slowly all the time (but have high impact words filled with meaning all the time), be all-knowing, and not run around with a sword. She would also be strange and baffling at times.
This fan artist for the Witcher understands elves did a comic that illustrates their behavior here: CIRI, The Child of Destiny - Lady of the Lake (the-comic.org)
The Galadriel in show is basically a human to me, and behaves like one.