“I don’t do regrets. Regrets are pointless. It’s too late for regrets. You’ve already done it, haven’t you? You’ve lived your life. No point wishing you could change it.”
― Lemmy Kilmister
What’s done is done. There’s no point in wasting energy regretting things that are in your past and can’t be changed. It does no one any good, least of all you. So, instead focus on creating a future that you are proud of and make better choices going forward.