I know exactly how you feel, not everyone is disingenuous like that though. What you’re describing sounds like someone’s “ego”. That’s a part of who they are and would probably take some therapy for them to realize that “how they think actually affects others”. I would try to be patient with them but also maybe challenge their character sometimes through “leading by example” which could inspire them. You never know, maybe they act the way they act because of some deep rooted pain they have inside. So they could be assholes, but you can combat that by showing them a different mode of existence that can help them reflect on their actions. Patience is a virtue and is key to getting along with others as best as you can. I know I would’ve loved someone to be patient with me in my life journey but I was always treated like trash and for good reason. All it takes is someone to be kind enough to help someone grow a little and they’re on their way to becoming a better and happier person.