Started ER Internship, Reconsidering: Exit Opps?

For a bit of background, I just started my internship in equity research at a low-tier BB (DB/Citi/UBS) and already having second thoughts. I decided not to do IB because I knew I didn't want PE and thought I was more interested in publics. The issue, however, is that I don't really mesh with the culture or work in ER at all. There is no bullpen atmosphere (we're in cubicles), my floor is incredibly quiet, and people don't really make an effort to get to know one another. Did not think it would be this introverted. Also, the job is less "forming views on industries and the market" and instead is going so granular on stuff for your analyst that you forget why you're even doing it.

I thought it would be great because people exit from ER to MM L/S funds and LOs all the time and I figured that was what I want to do, but I'm really reconsidering that based on what I read about MM HF life on here and how I'm already wishing for something more collaborative, less isolating. Seems like corporate exits are limited too (corp dev off limits); Plus, if I came back full time, it would almost 100% be to a different team than I'm interning in and I don't like leaving career prospects in the balance like that. 

Has anyone been in this position? Has me thinking about re-recruiting but I know that's a bloodbath and I go to a semi-target. I don't want private equity but having a wider slate than just public markets investing would be nice to consider and I think the culture is just off. Maybe it's better at a MM HF or a different firm? Genuinely interested in markets so have considered S&T but that seems so niche and doesn't build a very wide skillset.

Any advice would be appreciated