Being an introvert is tiring

It was so hard being an introvert and being insecure especially during my pre-teen and teenager era. I've lost some friends during those years and even now. I was almost cyber bullied and was always getting teamed up on making me fail tests🙂 I've had solid friends that want to reach out to me but I ignore them since I'm not really fond of long chats(I've told them). I want to reply but I really can't. I don't know if I'm just depressed tho since Idk where my life is heading.

Have you had similar experiences or should I just get mentally/psychologically evaluated?