anger issues (sorry if this is in the wrong group)

so i’m 14 and everything makes me mad! i feel really bad because i normally take it out on my little brother (not like physically or anything i just yell at him) i try to be calm but it never works. i really need help because i want to be close to my family but everyone and every little thing makes me mad. all i do is lay in my room all day. i enjoy hanging out with my family but somethings they do make me very upset. like my little brother isn’t very hygienic and i’m also a germaphobe. someone please help