My mum fears about me too much and it’s so annoying :(

Yes I understand she is a mother but I’m 18 now and I just feel like it’s a bit much. She goes on about everyday she stresses and worries about me now I’m starting uni even tho I’m staying home for it. I told her I’m going clubbing next week Saturday with my friend for freshers and she said she won’t allow me because she’s too ‘scared’. It’s kind of annoying because there’s things I’d like to do and she won’t let me. Today she was stalking my tik tok account repeatedly and then came upstairs to lecture me on how I should private my account. Not sure what to do anymore ugh