My family is messed up. They talk to my older siblings but ignore me

Like I found out that they’ve only give my condolences to my older half siblings for our dad’s deaths two years ago. They told me and that hurts me because I’ve NEVER had a single person call to check up on me (accept for my aunt and uncle and my siblings) and I told them I’ve never gotten any calls or anything. I got ignored during family get togethers and I got skipped when people said hi and bye. My brother and sister is pissed that nobody bothered to call to check up on me and only them. Other than our aunt and uncle, we don’t talk to the others anymore. I got blamed for my dads death and I’m not responsible for it.