I told you, I advised you. I did my part.
Shuayb turns away after the end
After the destruction, Shuayb turned away from his people. He told them I conveyed my Lord's messages and gave you good advice. Ibn Kathir explains: I delivered what I was sent with, so I will not grieve, since you rejected it.
You warned your younger brother about the friends he was keeping. You said it kindly, more than once. He did not listen. You keep blaming yourself. You did your part. The rest was his.
If they did not change, I must have failed.
My job is to advise sincerely. Their response is not my burden to carry.
Think of one person you keep trying to fix. Make dua for them, then let go a little.