You’re obviously not from round here… (Gesturing vaguely at shuffling hordes of very plain people in my town. Self included. I fit right in.)

Seriously though, comparing yourself with strangers is a terrible idea. That said, if you do want to smarten up a bit, I’d suggest going to a menswear store and asking an assistant to assist. Explain your dilemma, ask them to help you put together one outfit, “smart casual” would be a good start. Good luck!