The most stressful part of buying a car is not negotiating with dealers or sellers, it's the unsolicited advice from acquaintances
sucks and at this point, it sounds like just having to shop around is enough of a stress as it is! hope you're able to find something out there that works for you. it's dumb too because, at least in my experience, a car is one of those long term things that eventually people do notice where that's co-workers, friends, or family. it feels like eventually they all have a turn asking about it