It's frustrating because I feel like I'm always bothering people.
Oh dear, why do you feel like you're always bothering people?
It seems like no one has time for me and that they're annoyed with me when I speak to them.
This may all just be in your head, but I know it can be rough.  It's okay to have insecurities but you should try talking to your family.
I don't think it's in my head, they seem to be avoiding me.
If you're really upset by the way they're treating you, please sit down with them and tell them how you feel. They may not understand how the way they're treating you is affecting your self esteem.