Honestly I think being not conventionally attractive means you have to work harder (at times quite a bit harder) than pretty people to be afforded the same things they get for free? Things like people attributing 'good' intentions to whatever they're doing, and are more eager to be helpful to pretty people, and others are more willing to gloss over their mistakes and flaws.
Of course we are all flawed, and all humans make mistakes, but I think attractive people have a much easier time with this being recognised. I'm nearly 40 so this isn't just observing the social dynamics of youngsters! It's everywhere, at every age.
It's subtle. I'm not ugly, just kind of bland and nondescript
I'm very basic at grooming (washed and clean, but no point doing make up or hair as I'm shit at it and doesn't make any difference) and so don't really think about looks generally in day to day life - but then sometimes it hits me how it's like starting out a couple of steps behind a good looking person, in every new interaction?