i’m 14 and i need REALLY BAD ADVICE

okay i have been living with my grandpa since i was born ( he cannot look after himself ) my family and i take care of him. i don’t mean to be rude but he smells he doesn’t shower and he’s super stubborn about everything!!!! i cannot stand a messy house. here’s my issues okay so my room is right beside my front door in an older house it’s pretty big built it closet but sticks out (i can’t use it my families clothes are in there) the wallpaper my moms mom picked out and she had died when my mom was young (she won’t let me change it). i’m such a “organized” person in my own way things in MY SPACE have to BE MY WAY!!! but they never are like the closet i cant use it , can’t paint over or change wallpaper , she picked up a free dresser that i told her i didn’t like , we were moving a new couch into my living room so the other one had to go IN MY SPACE!!! i’m supposedly be movin my room upstairs right beside my parents room but it’s going to take awhile because it’s like a storage room 😖😖 and then we have to patch the walls before we can paint them the colour i WANT (finally). but ive been changing my room around a lot because i never like it i dont know its hard but i find the need to change it around like every single week it’s tiring but i get super sad and upset if i don’t. it’s really rough because nothing is really the way i want it and i just want and organized room. the one upstairs is going to be THE WAY I LIKE. but it’s going to take along time. is there something wrong with me? does anyone have advice for my struggle... sorry if it’s dramatic but it feels so frustrating to me