How to meet new people?

I want to walk down town on my own but I am too scared to go on my own. I wont go anywhere without my mum because I’m afraid that I’ll get bullied by our neighbours. Also if I see an attractive guy I dont know what to do when I want to walk on my own but when I see one I try to be something I’m not. It is very hard for me to just walk to the corner shop. I have had this dissabillity all my life. Please help me give me some help.