Why, no matter how many people I am surrounded by or immersed with, do I feel so utterly alone?

Feeling like you're on the outside looking in is often just perspective and the mood you're in. Trying to connect and let people in is important. If you always feel that way, it may be time to find a different group to interact with.

The best way to combat loneliness is to feel loved and understood. Loneliness usually sprouts from an overwhelming dread of being misunderstood and, overall, isolated.

Well, Have you thought that maybe you don't really talk to those people around you? Or maybe it might be that the person that you want around is not there to talk to? Do you question what your purpose in life is? Choose one btw. Last one might not be it.

As someone that has felt like that, the piece of the puzzle that is missing, or rather making you feel like you’re alone, in my opinion, is a bond between someone. When you form that bond with someone, you’ll feel like even if that person isn’t right there with you, in front of you, they are in fact with you in spirit or thoughts. This bond can be obtained by having a best friend that you almost always hang out with or a significant other, that you are able to talk to about anything and everything and do just about everything with. I hope my answer helps you with your question.

My, friend you are not alone there are so many people struggling with this same issue as you are. It probably is some kind of in balance in the brain where your brain does not produce enough serotonin. You can go to the doctor and they will probably give you some medicine to help your body to reach a balance, so that you will be able to become more social than what you are right now. It can be a drag when you just do not fit in any where you go and you just do not know what is wrong with you. I recommend you get you some medicine so that you might be better able to fit in with other people. I wish you nothing but the best moving forward with your life.