Lol its pathetic, people are never satisfied. Damned if you do, damned if you don't. If isekai MC doesn't express their feelings realistically, readers get mad but once they do, the MC is "whiny" and "selfish", nah mate that's just a young adult (18-20 yo) who wasn't experienced in her past world and isnt in this one. She was supposed to be getting ready to start her life, get a job, fall in love etc etc. She had a loving family and a good life but she suddenly died and is smacked into an unknown world, everything she ever knew is gone; she's stripped of her language, and her identity. All she wants is to go home and these strangers are blocking her from doing so, though unknown to her it's out of love. She is not the "villain", and neither are they, they're all just victims of circumstance. You knew what you were getting into reading that synopsis, so don't bitch when the story goes exactly as it said it would.