I Like Villains, so I Reincarnated as One

Overturn the (supposed) tragic fate of the villains with knowledge cheats!!
Compared constantly to his exceptional younger sister, losing even his position as the next lord, he fell into despair and imposed a tyrannical rule, leading to his defeat by the protagonists——such is the life of the villain Weiss Hamilton in a certain game.
Moved by his story, I became a “villain supporter.” One day, I woke up in the game world as “Weiss.” It was a few years before he was defeated by the protagonists… In other words! It means I can still change his fate now!!
Having played this game extensively and repeated hundreds of simulations on how to save Weiss, I will avoid the destruction flags with my knowledge and experience!!
A fantasy of villain redemption starting from reincarnation as my favorite character!!