Is it normal if i don't believe who i am according to everyone?

It's kind of annoying how the way society perceives you is who you are apparently. Society includes family and friends. You know when you just naturally have an "angry" face but you're not angry or high arch eyebrows where you look sad but you're not? That's how I feel about my personality to others. Apparently, I come out as a brat, stuck up, selfish, conceited, superficial, etc. I seriously don't know why. I know that's not who I am and that's def not what i try to portray to everyone else. It's not fair. I am a good person and people look at my flaws I guess and not through them. I understand that who you are is according to you, not social situations. But unfortunately, we live with other people and interaction, so the person I am perceived as exist and I cannot tell them that's not who I am because I'm not gonna change my ways just cause they see them that way. If I portrayed myself on purpose the way pple see me, then yeah I'd try to change them if I cared, but since I don't even know I'm putting myself like that, I cannot change since idk what to change. Maybe it's my voice, my looks, idk what makes people see me in those ways.