Yes, it's important to have friends. The things we can't share with our parents can be shared with our friends they are who can understand us. I can understand about your introversion I m too an introvert. But, I have many friends they have accepted the way I am. I think you should talk to your friends, you have to tell them what you feel that you feel they don't listen to you. Sometimes, I too used to feel that way you are feeling but sorting this out worked for me. Now, they never make me feel alone. Believe me, having friends, enjoying our life with them, trying silly things, creating memories with them is the best feeling ever.
It will take time to make friends or a strong friendship but, it will be the best feeling you ever got. (strong friendship need is time and attention).
Once, you build a strong friendship checking on each other comes in return.
Hope, you got your answer.