Don't feel bad about being depressed. Everyone here has been depressed and if not, you will be soon. I am curreently in a bad state of depression. It's nothing to be upset about. Many people have different ways of getting over depression. Do things to get your mind off of it is the best way to do it. If that doesn't work than you should talk to a school counselor or your parents. It is best to talk to someone about your problems so you don't bottle them all up and/or do something stupid to hurt yourself. I tend to bottle up my emotions and then release them out on people. That's not a good idea. Don't do that. Ever. It will just make people upset with you and you'll just have a bad time. About having no friends, you just have to get out there and make some new friends. Find people with the same interest as you. It's easy! There's a bunch of people around you everyday. Someone is willing to listen to you and be your friend. I understand that some people are socially awkward, I get that. It's not going to change anything if you just sit around and complain about you not having any friends if you don't go out there and get them! Making friends is fun and enjoyable. Everyone loves to have someone around them to talk to and to have fun with. Communication is a key part of the human body. If you sit around and don't talk to anyone, you're going to be miserable. About being ugly: no one is ugly. At all. Everyone is beautiful in their own way. You're 13, you're still growing and you'll become more and more beautiful as life goes on.
In short: Do things you love, meet new people, and live life to the fullest.
Also, don't ever consider suicide. That's the most idiotic thing you can do. It is a permanant fix to your tempararoy problems. Life is too precious to even miss a second. Get out there and live it up.

EDIT: if any of you ever need to talk to me about any of your problems or you just need a friend to talk to that will listen, shoot me a PM on here or my Skype is poeticfolly.