Tons in the comment says this manga is trash but never did any manga I have read hit my heart too much. I cried when the MC finally heard the words in Chapter 11 pages 14-19 plus those last acts in Chapter 13. I love her pessimism (it hits home). The characters and setting is somewhat trash...
https://mangadex.org/title/40076/i-became-a-legend-a-decade-later-after-telling-my-comrades-to-leave-everything-to-me-and-retreat-first
I think you're looking for this