Anxious with your own family?

Any anxious around their own relatives? I have a superficial relationship with my dad and my older brothers. My dad moved out when I was in middle school, so did my older brother was getting hus first place at the time. I talk to my sisters but Im not fully myself around them either. I barely speak with my cousins, most of whom are over a decade older. I am then left out when my siblings are talking about their mutual friends, at certain family functions I feel uncomfortable being around them, thier spouses, kids, friends. I worry they might pity me.