In case you haven't seen it, you might like Ran. It's essentially king lear, but the retired king in this case is forced to repeatedly come face-to-face with the atrocities he's committed through his reign. Tbh I don't remember how much that was a part of the original King Lear, only time I've read the play was as a high school senior and I kinda tuned out the second I got my college acceptance.