I feel like one way to tell if you’re ugly is to see how society perceives your accomplishments
If you’re conventionally attractive people will act like they expected it and even try to be your friend. If on the other hand you’re unattractive people will act shocked and think things like “how did he do that” or “must’ve gotten lucky”. Society loves framing unattractive guys success as an underdog story it’s kind of sad. But yeah if you’re unattractive people will try and downplay it