Villainess resolves to bully the heroine but absolutely sucks at it and ends up actually becoming friends with the heroine, despite her best efforts.
Sounds exactly like https://www.novelupdates.com/series/albert-ke-no-reijou-wa-botsuraku-wo-go-shomou-desu/ Unfortunately, with all the random pick-up and drops, it's kinda confusing to keep up with it now.
Villainess With a Cat Changing System villainess bully heroine. Villainess is cute tsundere, she secretly help heroine. Abused Female Lead And Beautiful Villainess (Quick Transmigration heroine tease villainess
Observation Records of a Self-Proclaimed Villainess' Fiancé At the very end, the heroine realizes her mistakes. Watching Bertia (the villainess) 'bully' the heroine is hilarious because she's too stupid/naïve to realize she's only giving out proper advice...