Hey, I was in a job a few months ago where I felt the same way. I felt like I had no connection to the work environment or my immediate coworkers. The work culture, if it could be called that, could probably be best described as actively instilling a sense of skepticism and distrust about all the other employees and their competence, as well as the rigor and integrity of my position.
On top of that I felt like I had a lot of education and achievements that were not at all applicable to that job, and as a new employee I had no good direction and training was formulated in a less-than-competent way. I didn't know why I was there and I knew I was doing badly. It was a huge hit in my professional self confidence.
Since then I've quit and started a new job that is amazing and fulfilling. I basically just handed ina resignation before I had anything concrete lined up because I couldn't take the psychological damage anymore. I had shied away from the kind of position I'm in now because it's a bit less money and I had thought I wouldn't be happy continuing with a research position, but it turns out I was wrong about that.
I don't know how to direct you to that new spot, but there's hope. Try not to let your current environment drag you down too much and turn you into a pessimist.