We all need support. Engage in activities that build a support network for your sobriety -- be it 12-step groups, physical-activity groups, or even as simple as talking to others about your own struggle for sobriety.
There's a real sense of freedom that comes from living an open and not cloistered life. Alienation is definitely a trigger for me, and I really sympathize with where you are emotionally. But you -- we -- can do something about it. It requires a little courage, no doubt, reaching out to others and we have to bare our souls if only a little. But it's doable.
Follow your interests, meet people who share them, open up to them when it is appropriate, and know that not everyone will have the empathy to help. But when you find someone who does ... !