Is it okay to even try and fix broken hearts and friendships?

In my opinion, it's okay to say sorry and such. But please never explain yourself, because that doesn't change things. It doesn't fix the trust and the relationship you had before. What's your purpose in doing it? Is it to make you feel better in spite of everything that's been said and done? Or maybe you want some closure? Either way saying sorry is enough, but you should never regret what you have done. If it triggers them, then there's nothing you can do about it but to move on. At least you gave them your peace of mind right?