these are a lot of animes that i feel are pretty underrated, and here are the ones i reccomend the most:
Banana fish: Animation is amazing as is the plot, but you will definitely cry.
Violet Evergarden: Animation is very clear and artistic, and its a pretty heartwarming story.
Killing stalking: This is only available in web manga and manga format as far as i know, but i really enjoyed the story. it is very graphic and some parts are nsfw, but it is a very interesting and thought-provoking story.