AIO because I think my dad is a bad parent?

Basically my mother passed away 20th March 2020, and my grandma looked after us for a while. Then in 2021 my dad started looking after us and everything crumbled down. He is the epitome of a bad parent, leaving the fridge empty for days, and not buying me essentials (pens, pencils for school or sanitary pads) unless I get my grandma to buy them for me. He (not very legally) works, but puts the money towards a crypto. a CRYPTO. now this wouldn’t be a problem - if he actually cared about his kids. My brother is deaf, autistic and mute and each attempt of sign language he tries, my dad gives him food. My brother is 94kg at 14. My sisters are treated like angels, being compared against me constantly as if he haven’t made it clear he thinks im useless. If my sister swears “she learnt it from you”. I get bad grades at school after social isolation at home, “stay away from her”. CPS is involved and came when the house was messy because I hadn’t cleaned it as told, and I got threatened by my own dad. I am writing from my phone which he took after I forgot something for a year. II feel like a slave in my own home. And I don’t know whether I’m being annoying or not. I can’t believe anything that comes out of my mouth anymore.