there is a warning at the beginning of the quest to not start anything else or accept new companions also as far as like finishing the quest you should have just done that the moment you stepped foot in the city by just entering the noer streets cell
also we have people who speak the languages included in the games menu who could help you also so if you speak any of those you could have just posted in native language with exception to korean, since i am not sure theres anyone in the discord that speaks it that has enough time in their day to translate