I cannot forgive the cruelty to animals
There are several I struggle with Betrayal or physical/sexual abuse (especially of a child) or murder for greed. All tough ones. I do not do well with suicides either
right now, I can't forgive people who have never seen me as I am, who were so quick to declare me mentally ill and deficient, to the point where I know nobody in my entire life that I ever will meet again, will ever look at me as a whole person, but as a broken down waste of a human life.