Kori, you didn't say anything wrong. At all. If a person innocently, for their own reasons, says something about their own feelings with no intent to hurt or trigger something in someone else, then there's no way at all they did anything wrong.
In your second post you said you'd asked an adult for some advice or help about someone who was bugging you in a way that was triggering you and all the adult could do was talk about themselves, and that you'd heard your co-workers speaking badly about you and, most distressing of all, that you'd been in a dating situation with an adult in the past who had misused you. It's no wonder you don't trust adults!
If there is something that's bugging you a lot that is bringing on these feelings about adult selfishness, this is a place to talk about it and I think people would like to know what you've been going through. I would like to know.
I think maybe you didn't get as many supportive responses as one would have liked because this
is such a trigger situation for so many people. Not just you and not just me, but for many people.
It's a trigger situation for me, but that's in no way your doing or your fault or your responsibility. You did nothing wrong by starting this thread.
Maybe we all could use a group hug

and an acknowledgment that this is a hot topic. If you care to talk about what set you off to begin with, I promise to listen carefully and to offer you support and encouragement and hugs, if that's what you need and want in the present moment.