I really want to be more independent but I can't because I'm 13. What should I do?

I'm not talking like, going out into the city with friends alone and stuff, I can do that, but at the moment I'm just getting really frustrated. To be honest I don't know why, but I feel like I want to have freedom to be able to do what I'd like. I feel like I want to move out, but at the same time I wouldn't if given the choice, because I don't want to leave… But I do? Argh! I hate this! I think I just want freedom and my own choices that I can make by myself… But I can't. I want to maybe get a little part-time job to earn some money of my own and to help my family… But I can't because I'm too young. It just frustrates me so much… I want to be responsible for my own stuff and make my own decisions… But I CAN'T! This is so annoying and it's driving me insane! When I ask to go to the shop, my mum says no and I get annoyed that I can't get there by myself. I don't get any pocket money at all, except birthday and rarely Christmas, but of course I get excited and spend it immediately… Stupid me… I guess that just adds to the desire of a job and being able to have money for once. I feel like a baby and I want to prove that I can take care of myself… I think? I know I still need my parents, but I want to be able to NOT need my parents. I don't even know.
I'm confusing myself and I feel really strange and (sorry using the word again) so FRUSTRATED!
Please no hateful answers… They're very hurtful:(
Thank you for reading.

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