I am the same way. Cannot be around people outdoors when I am alone, and it still makes me uncomfortable even when I am with someone.

My walks involve not leaving until the other people in my apartment are all inside, and turning on streets with no people. When I do have to pass by someone, I also walk faster, head down or turned away.

Last time I tried to briefly stare at some people to put my toes in the water.. heart about fell out my chest.

I fear I look awkward and out of place too. I get anxiety about that. Then I feel like my anxious, weird energy that results is also obvious, and then I get twice as anxious.