Help! I acted desperate after a breakup! I want to redeem myself.

Sounds to me like the best thing to do for now is not reach out or go out of your way to talk to him when you see him at your kid’s practice or games. Let him see you there doing okay, not paying attention to him, put together and doing fine, unbothered by his presence. Politely acknowledge him if he says something to you, but keep it very short and then excuse yourself.

Do this because there’s really nothing you can say that will change his opinion of you, because when someone flips like that with no real communication about what happened, it usually had nothing to do with you in the first place!!

If he just flipped on you, I can almost guarantee that you are not the only woman he has done this to, and he has seen women get blindsided, shocked, and react the same upset way before as well. Because that is a common enough response to that crappy situation! So I don’t think it matters that you responded to the breakup more emotionally in the moment than you ideally wanted to. Sure, since he was looking for an excuse to end things anyway, in the moment he might have felt more justified by your reaction, but after the fact it really doesn’t matter. People who flip with little communication or warning have just shown you that they aren’t good looking-term partners worth winning back or worrying about their opinions.

It’s also totally fine if you don’t feel that way yet, that the way he rejected you was actually the sign of a bullet dodged and good riddance, since it just happened. But unless you lashed out in anger and did something mean to him that deserves an apology (and being upset, distraught, or desperate doesn’t deserve an apology, you have a right to feel sad and heartbroken…), letting things cool down and putting yourself back together seems to me to be the best response here no matter what you’re hoping will happen next (moving on, trying to get him back, having a coach/parent “professional” dynamic in the future, etc, the cool down period advice applies to any of those outcomes).