I need family advice, or just advice in general?

i feel that living with my mom and my little brother trashes my soul. it's basically me against my mom and brother. they team up against me and put me down. one time, i was outside talking with a friend and my brother ran out with his wooden bat and started beating me. i ran crying to my mom about it and she said 'i was on the phone'. i'm constantly harshly critized by her and my brother. i'm a good kid, i do well in school, i have a job, i play 2 varsity sports, i don't know what i've done to deserve all this hate towards me. 2 years ago i would've never thought to raise my voice to anyone or show aggression but living with my mom and brother has brought out the absolute worst side of me. and i hate it and i don't want to grow into it. i don't know what else to do, i try avoiding everything but i can't. i need help. i don't act the same way as i do at home. at home i turn into a monster due to my mom. and if it starts to show in front of my friends, i'd die on the inside. help :(