Why do I feel so alone?

I don't know why you feel alone, but I know some solutions: call someone, go out, take up a hobby or sports, join a teen activity or church youth group, surprise another person with the gift of your presence, sing a song, write a song, learn a new instrument, cook dinner, ask someone else about their life, thing of ways to improve yourself.

maybe becuz you dont have any friends? or no family? or just that you dont connect with anyone?

You've not yet learned to appreciate the simple joy of solitude! :)

Because you don't have a dog!!!