Hi there!
Are you considering the possibility to go to a doctor for a diagnosis? They can advise you about what therapy follow and the steps you can give to overcome your difficulties.

Not sure if you have to tell these groups of people anything about having this or that problem but it's possible that they can understand that you sometimes feel hard to keep contact bc you have some problems to socialize.
Perhaps, if you tell it them in that way, you will feel less pressure and you could find some understanding on their part.

At least, this is what I do now. Before, I avoid it. It was too much pressure.