I try and avoid regrets, to be honest. I don’t see the point. You’re meant to make mistakes – because you’re meant to learn from them. You’re meant to become a better person and grow.
That said, of course there are a couple of things I wish I hadn’t done. People I’ve hurt that I know I can’t take back – things I’ve done that I’m not overly proud of. The wouldn’t be human without regrets.
But the best thing you can do is live and learn, don’t make it again, and try and put the experience to good use. Be a better version of yourself.