Congratulations on 2 years sober. I think many of us have had similar feelings when we stop drinking. For me, drinking was a coping mechanism and it made me more outgoing. However, the price I paid for that was to come close to losing my family and it was absolutely not worth it. I no longer enjoy spending much time in crowds with people I don't know very well, so I don't do that. I focus on family and friends and being the best person I can.
This book was an eye-opener for me:
Quiet: The Power of Introverts in a World That Can't Stop Talking
by Susan Cain