Let's start with abortion.
In 1999, Trump said that he would not ban even partial birth abortions because he was, in his own words, "pro-choice in every respect."
Sure, that was over 15 ago. Hopefully, he has changed. Some people do. Norma McCorvey a/k/a Roe from Roe v. Wade became a pro-life activist.
Has Trump ever said that he was wrong in 1999 and that he is now pro-life?
yes he has dealt with the issue several. Times. He said that a friend wanted an abortion and decided against it. The friend had a beaurifu child who parents found great joy and he realized how wrong abortion was
It is covered in his books as well as in interviews and questions at rallies