Everyone can relate to much of this. It does get harder to make new connections as you age. This will not go away. However, most people will not struggle quite to this degree, and I suspect a lot of your suffering is psychological--how you interpret things, etc, which is not necessarily in your conscious control. I suspect people who reflect more deeply struggle with this more often. Most people do not much consider who they should be, or even how they relate to people. They simply do, and even if it does not make them genuinely happy, it is satisfactory just to do. Many great thinkers throughout history have proposed this sort of perspective (e.g. William James, famous psychologist).

There is an emptiness to most friendships. People expect you to entertain them, for example, in order to earn their attention. To someone who is highly self-aware, this feels dehumanizing. If you invest widely into people though, you will find it is not the case for everyone. Some people will learn to appreciate you more deeply. Not all the time. And it's not always obvious until they need you or themselves feel lost. But it's rewarding to occasionally see someone's deep appreciation for who you are, as rare as it might be. Until they leave you for one reason or another, but it's still worth it. It's also not easy to predict who these people will be.

Be open-minded. Be friendly with all. Give everyone the benefit of the doubt. The minority of awesome people are worth giving everyone a chance, or two, or three. This alone puts you ahead of the curve in terms of quality friendship--the judgmental, shitty people don't give chances. ;) Best of luck!