The other engineers would go by his office to make small talk, chat about great projects they're working on, and sports they both like. I never did any such thing and stayed in my office working.
Then when we all went out for drinks at the end of the week, I chatted as I normally would but I felt like the new boss kept shutting down my stories to get a laugh from the others. I felt like I was already being judged. That's when I reached negative respect for this new guy.
Over time I would see him going to all the other engineers' offices to chat and catch up on projects, but never mine, and that further cemented the feeling that this guy doesn't like me.
I felt that if my boss isn't going to make any effort to get to know me or respect me, then I'm not going to kiss his ass to make him like me. I'm sure he felt the same way, especially since he previously held a position of authority in the US military so he probably saw boot kissing as mandatory.
Once performance reviews came, even though I had met all the quantitative goals that were set, he gave me a bad rating because of qualitative reasons which I felt were injected into my review to make it negative to match his bias.
Once the pandemic hit I was fired, but I have a better job now. It doesn't pay as much, but is more interesting and is work from home, so suck it Scott!