I mean just gonna say. He was labeled a Tyrant by others because he killed his dad and family to take the throne and protect his friends and probably his own life. Outside of the view we have inside to his catus self his tyrant name is mostly just from the public who knows he killed but not why he killed.... I understand being annoyed and wanting a more crazied ml seperate from the story writting making a label almost redundant...shame I don't know of any I could recommend since even the one would I would semi label crazy who threatens FL life a lot still ends up loving her.. fyi I'm referring to Villains Are Destined to Die.

My pet peeve with this genre is when they say tyrant and cannot fully commit to it. They say the ml is the worst tyrant out there but he is just some narcissistic man-child with an attitude. Then he is saved by love of fl (who by the way does nothing interesting for the ml to fall that deep anyway).
When I hear tyrant I want batshit crazy, give me the jocker or Sangwoo (killing stalking) type tyrants who doesn’t falter for fl on first sight. Make me genuinely concerned for the fls life when she is near him and how she manages to come out alive each time.
Your weak ass pretty boys who are just tsunderes at most are boring. Sign of weak writing tbh. It's like the author doesn’t have enough capability to write complex character like that and make the readers not hate him. If you say tyrant, give me one you cowards.