Unsure what to even say anymore

Recently, I went over for thanksgiving to a family member's house because I was in a college dorm. I stayed at my grandfather's house and my uncle was living there. My uncle isnt the most sane person to be around as hes already been to prison, did drugs and overdosed a ton, and plays a role in my trauma as a child as I was thrown into a room once as a small child and no one could tell me what was going on except all I could hear is throwing up, crying, screaming, and I was confused. I came to learn he overdosed on new years and I was thrown in the room to prevent me from seeing it but all I could do is hear everything happening and no one had stayed with me or checked up on me. I was terrified at 6 and still dont feel comfortable [currently 22] around him because he was still trying to screw his life up with drugs around my teenage years. Anyways, so I am at this house and I already don't feel comfortable with him however I try my best while gritting my teeth violently to be respectful anytime he tried to act casual around him.

2 years prior I had also been sexually assaulted on a ride in disney as I thought a guy was my friend but he turned out to be just a fucking weirdo who ended up touching my chest and I screamed and hollered for help but people thought I was having a good time. I was not. I was strapped down and being molested screaming my lungs out as I tried to save myself. My parents at the time didn't even care when I told them afterwards they just told me, "You should be glad you werent raped" and I still remember every detail as if it happened yesterday.

The reason I mention this story is because as I already had issues with my uncle and was already on edge. He started to try to tickle me which at first wasn't an issue till he tried moving to a really sensitive part of my body that the guy started off at when molesting me and I screamed and got super pissed at me. I literally cried and freaked out because I told him to stop and he didnt stop. You can tell this isnt funny or a joke to me when I have literally started scratching my face and my face is red as hell scared. At that point I felt like I was reliving 2 years ago as if it was happening now and I smacked him and walked away.

I then get a call from my family saying that I should be understanding because my uncle is trying to be affectionate and that hes trying to rehab himself. I literally hung up and havent talked since because I once again felt unheard.