there's an expression - "you never get a second chance to make a first impression"

and sometimes it takes a while to over come one unfortunate faux pas

When we need most to be understood it fails us the most. Its all just too...hard?

Perceptions, interpretations, judgments occur naturally but they can also be reinforced if it supports a biased narrative that someone clings to, like a person other than themselves looking bad to boost their ego.

Short answer, yes, they make it up. It comes naturally to them.

Folks are generally multi-faceted. Maybe the other person... Has a very small selection of interests and not much else?

Small perspective. Small conclusions. Like that people are one-sided.

How do you mean? I mean vulnerabilities are attractive.

NO SHOWING CRACKS OR ANY VULNERABILITY ALLOWED
YOU WILL BE PERFECT AT ALL TIMES😤

Yep that is what they do. People lust to judge others.