I have a near perfect life but am still unhappy and insecure.
I'm sorry to hear that. Why do you think you are unhappy and insecure?
I was unreasonably bullied when I was in my school.
I understand your pain, but you should be grateful that you have a near perfect life. If things are bothering you that badly though, you should seek out help.
I don't know what to do with this.
If you are feeling down for no reason, it's important to talk to your doctor about it. They may be able to help figure out what is wrong.