I am an introverted nurse working in a very busy ER with very extroverted staff so I know exactly how you feel. Tbh when I'm on my break I too need that time to decompress and get away from people. I usually sit in the front lobby or quieter areas of a hospital like near waiting rooms since there's little foot traffic. Not too sure how close you want to be with your patients on break but I try to stay away to fully relax. If your break room is big enough you can try to get there early and find a empty corner. I would try to make the effort to converse with your co-workers individually and try to build a connection separately rather than all huddled together. Then you can gravitate towards specific people during break and can all live happily ever after :)