I Have Trust Issues With A Family Member

Because my older sibling is a dictator of me especially financially making me pay up for things that aren't my responsibility, then gets mad at me for being broke, and enjoys watching me be humiliated by other family members over my private matters. It's reasons like that why I don't trust anyone in my fam. A level of trust had been broken. I keep a lot to myself or open up to my closets friends.