What to do after you have apologised
The sentence is the beginning of repair, not the end. These are the actions that make an apology safer to believe.
It is tempting to think the apology is the hard part. Often the harder part is the quiet stretch afterwards, when there is no message to send and no immediate sign that the relationship is repaired.
That stretch is where the promise becomes real.
Do the action you named
If you said you would replace something, replace it. If you said you would stop sharing private information, stop. If the change needs a system, build the system instead of asking the other person to remind you.
A promise that depends on the person you hurt supervising you is not much of a change.
Do not ask for an immediate verdict
“Are we okay?” can be an honest question, but asked too soon it turns your anxiety into their responsibility. Give them room to answer when they know how they feel.
You can say, “I understand if you need time. I will not keep asking you to close this conversation for me.”
Accept a boundary without negotiating it
A person can accept your apology and still choose less contact. They can believe that you regret it and still not trust you yet. Those are not contradictions.
Repair is not a trade where the apology purchases the relationship back. It is an offer, and the other person decides what they want to do with it.
Let the change become boring
Grand gestures are easy to notice and easy to stop. Consistency is quieter: you arrive when you said you would, you tell the truth earlier, you do not repeat the story to make yourself look better.
The best evidence is usually too ordinary to post about. That is why it works.
Keep the words if they matter
A private sky can give a difficult message somewhere to land without forcing a reply. Keep it available, respect the recipient's choice and let future behaviour carry the weight.
If you are still writing the first message, start with one clear sentence.