There is no such thing as a job that never involves other people. Self employment will solve, to an extent, the working "for other people" problem, but even then you would have to deal with whoever it is that is buying whatever you produce.

The problem isn't always other people. I'm an introvert, I shut down in groups, and I get anxiety in large gatherings.

I don't know what will help you. For me it was getting a degree in communications. I learned how to deal with other people, how to read their body language, how to give speeches and presentations, and how to communicate effectively through writing. It pulled me way out of my comfort zone.

Learn to communicate your issues more effectively and more people will listen (rather than argue). This makes your job easier. It helps motivate others around you. And it may even help you like other people a bit more.