I'm thinking of blatantly disobeying my parents
Oh man, why? Is this you being a rebellious?
It's to get back at them for their unreasonable shouting at me through the whole house
I'm sorry that they are shouting at you, but I don't think that being a rebellious will solve anything and in fact, it can even make things worse as they may shout more at you.
I think my parents should understand me... I wish you were my parent.
I do hope they understand you better too. Try to sit with them and have a dialogue with them on how their behavior is messing you up  and that will make them understand more what you're going through.