Why does everyone not like me?

For a while now i feel that no one likes me even my parents and family. My dad says i am very pissy and ***** a lot. My mom says i have no friends and bitches at me all the time. My brother and me never and i mean literaly never get along and because of this relationship that is why my parents dont like me. My sisters dont say much too me and when there is a argument they are on everyone elses side besides me.I dont thinK im truley that bad to be hated this much??. My cousins sometimes dont even like me or they just dont talk to me at reunions. My friends and people at school arent like this besides a few people which no one really likes. The only people that i can say actually like me are my grandparents and a few of my aunts and uncles.And heck some of my aunts and uncles dont even talk to me!!?. I took a self esteem test and got an 8out of 30 which is terrible considering normal is 15-30. Ive thought about running away and even slightly but not much at all about suicide. I am about 14, why does this seem to be and any suggestions. and no talking to my family wont work b/c they wont take it seriously.:(