Forgive the version of you that didn’t know better. You only know better because of them.

You know better now partly because of what that earlier version did and got wrong. Holding it against them is holding it against the person who paid for the lesson you are currently benefiting from. They were working with less: less information, fewer people to ask, a brain still being built.

Pick one thing you still wince about and write what you knew at the time. Then say the plain sentence to yourself: that person did what they could with that. Spend the energy on the next decision instead of the old one.