Cultivation world of mc thats evil. An example would be Great Demon King. I already tried Reverend Insanity
One that I like a lot is called magic emperor. There´s also the rebirth of the heavenly demon. I hope you like them, they´re two of my favourite novels! I also like chronicles of heavenly demon but it´s a manga not a novel
You definetely have to try Reverend Insanity (selfish protagonist without romance and plot armor (kinda, but definitely much less than false villain novels)). After that comes Warlock of the Magus World (it's a world with magic, but the power ups and all is pretty similar to a cultivation novel, just you won't see some classics like "Nascent soul realm"), My Journey to godhood as a Caterpillar and Way of the Devil, (Rise of the Worm Sovreign as a bonus). If you don't mind harems or romances there is Villain Cultivator (pretty explicit sex scenes) or Birth of the Demonic Sword (late romance, it kinda spoilt the story for the fanbase, but I'll let you judge). If you are more interested in the villain factor than the cultivator factor then I have to recommend you FFF-Class Trashhero (enjoys killing) and Ouroboros Record (does everything and I mean EVERYTHING to not die again). After that Dungeon Defense (scheming). Only selfish and op protagonists: The Lazy King and The Tutorial Is Too Hard (not op from the start, even better at the start he nearly dies multiple times). The majority of these novels has a great lack of plot armor, especially the ones I rated higher. If you want a more specific description of a particular novel feel free to write it here. P.s. sorry, I can't link the novels: I rarely make a comment, but the topic was too interesting for me.