Why I hate living with old people

Im currently 15 yrs old and my dad passed away when I was 12. It is really hard trying to process all this at once but here goes. Ever since that happened my mum, my dad's mum and me moved to this 1 bedroom house next to my school and we've been living here ever since. Everything was going pretty normal and my neighbours were really sweet and kind towards us. I felt like my life was finally coming together after I felt like my life was over. My dad would always be worried about my future because we was always scared that he would die soon (idk how he knew) he told my mum to never let me mingle with her side of the family because they're all rude towards us and never bothered to meet me ever since I was born. They never really loved my mom as well. I was glad that his wish really came true and that never really happened. I was leading a decent life with good company around me to cheer me on and comfort me when I needed it the most (only for a year). When I turned 14 my grandpa got sick so he had to come over to the place we lived to get treated. My grandparents were in town and my mum and her brother took care of him. I had recently joined a taekwondo class which helped me manage my stress so I'm so sorry grateful for it. They had this camp in Malaysia for a week alone with like 3 other kids from my class and my master. After I came back home the very next month my grandpa passed away. I barely knew the guy but he attended my dads funeral which was kind of him atleast. Then my uncle didn't want to take full custody of my grandma and he told my mum to take care of her. WHICH RUINED MY ENTIRE FUCKING YEAR. Everyday living in this house is like a hell hole i can't tolerate this. Look my grandma doesn't even like talk to me and she never took care of me too when I was younger. Idk if she really likes me or not but I know for a fact she hated mt dad and I never even imagined living with her. My dad's mum also hates her. We're already living in a small house and in that both my grandma's share a room I feel so bad for that. My mum and I don't have place to sleep so we sleep in the living room. Ive been begging my mum to shift houses but she says she can't do anything and she's trying. I don't ever blame her. I just don't know who to blame anymore. I do yoga to calm myself and I have boards coming up next week which is like the most important exam or something. Look i think what's most important is living life and not surviving. I hate being on survival mode but I try to tolerate as much as possible. I just need mental clarity and help. Love y'all ❤️