If you are not mature enough to know that it is very, very silly for a 13 year old to post her email address on a website like this, you are much too naive to enter an industry like publishing.
Do you want every paedophile around to start emailing you claiming they can get your book published if you if you just come and meet them somewhere? Seriously, take your email address down NOW.
The way to get a literary agent is not to ask random strangers if they know one. In any case, literary agents specialise in different kinds of work. Even if someone here did happen to know a literary agent, how on earth would we know if your book happened to be in the style and genre that they work with? Agents specialise, and if you'd done your research thoroughly, you'd know that.
First all, whatever way you contact them, no literary agent will give a toss about you if you haven't finished your book. You're only halfway through writing your novel. After that, you'll need to do multiple rewrites and edits and polish your manuscript for months until it's as perfect as it can be. (No, you won't just write a novel and get it perfect first time, and again, if you think you will, you are not mature enough to be trying to enter into an adult profession like writing novels.)
Only then are you ready to start even thinking about contacting literary agents, and sorry, but you'll have to do it the same way that everyone else does: with a lot of research into the right types of agent for your particular novel, and by querying them in the professional manner that they expect.
There are no shortcuts, and it doesn't matter that you're 13 - no allowances will be made for you on that basis. If you want to compete with professional adult writers - which you will have to do if you want to be a published novelist - you will have to conduct your business dealings in a professional, adult way.
Sorry if I sound harsh, but this is what you need to hear. You may think this is 'rude, unhelpful' but actually, it's very sound advice, because at the moment, you are just making yourself sound like any other naive child writer and not at all like someone who is ready to be published. Even if your book is brilliant, you won't get very far unless you acquire a bit more professionalism, do a lot more research into the industry and behave a lot more like an adult.