All my friend's are dating, Now I'm starting to feel lonely and hardly anyone to go out with, Any advice... ?

The first thing you need to do is to raise your self esteem and I will give you a link for that. You will find that the more you raise your confidence, the easier it will be to talk to people and one of them will be a girl who will be interested in knowing you better. Try going to different places and you may meet people that way. Get a gym memberships for example and work out one or two days a week. If there is a local bar that has karaoke, get up and sing no matter how bad you think you sound. That may help you meet someone but more importantly it will help your self confidence. If you are in college try getting involved in some activities there. Remember that many of those at your age who do get into relationships end up as single parents so don't let that bother you too much and wait until you find the right person, and you will in time, before worrying bout getting into a relationship.