Believe me I totally understand what you are saying, public places are my worst nightmare. I don't like people looking at me, which is kind of hard when you have to hand them money or something.
I especially feel awkward when there is nothing to look at and people are around you, so at that point the garbage can can become a real eye catcher for me, the design and contents
That has been one of my main issues of late, I need to walk for my health, but what if someone looks at me? what if I trip, what if a dog tries to attack me, what if I get ran over on the sidewalk by an out of control car..LOL, just weird things.
It is a battle and just know you are not alone!