Wow, that’s a tough situation to be in.
If you feel like you need closure with your husband, then what’s stopping you from approaching him and getting closure? Its hard to give any concrete advice on this, since I have no idea what the heck happened between the two of you. But, if you feel like you need to speak with him about things and just wrap things up, then try doing it.
I don’t think you should necessarily feel like a nobody just because you’re not married anymore. You’re experiencing a change. What your life was and is now are two different things. You’re 21 and you’re young. Inshallah you’ve got some time ahead of you.
I’d advise some self-development. Have you been to college? College has lots of experiences to offer, and perhaps that’s what you need right now. A new set of circumstances. I look back on my college life, and I have to say, that it shaped me SO MUCH. Things that happened in class, outside of class, with leadership roles, work roles, volunteering, friendships, projects, etc. If not college, then professional school, grad school, etc. Its really fulfilling, and maybe it’ll help you realize that you’re your own person: a strong-headed brave girl who had the courage to get out of a situation you were unhappy in, despite parental and family pressure, and you’re now out to live your life and make your own decisions.
I don’t think that’s a nobody.