Help making my room a better learning environment ?

Okay! So I'm in grade 8, struggling with my grades. Grade 8 is almost over in about a week or so, so I do need to start studying my butt off for exams . The thing is, I do need help. I can't work in the kitchen or living room because it's too loud with 2 brothers and parents. So I usually go I to my room , but it's not very helpful! Is it possible that since I don't line my room that I won't want to learn ? Or is it possible that my room Is small that I won't want to learn? Is it possible that since my desk is wobbly (it's not very stable & is old and crappy) I won't want to learn? When I say won't want to, it means have a huge hard time staying focused. If any of those are possible it would be great if I could get a website to look it up. Also , if I hate my room & think it's too small . Could there be a way to convinse my parents to let me move down into the fitness room, and then everything in there go into my old room? My dad is a teacher and hard to convinse. So pleasepleaseplease help me. I am a 14 year old girl. Thanks.