Perhaps the themes or tropes used in 'Hate That I Like You' aren't what you typically enjoy. Maybe the ending left you dissatisfied or the pacing was off for your liking.
One could hate it if the art style doesn't appeal to them or if the story progresses too slowly. Also, if the themes or messages it conveys are at odds with someone's values or preferences, that could be a reason.
Perhaps the development of the characters felt forced or the overall storyline was too predictable. Maybe there was a lack of depth or complexity that you look for in a manhwa.
This feeling of hatred towards the world and everyone could be due to a variety of factors, such as the individual experiencing more setbacks, being hurt, or being under psychological pressure. It was necessary to make mental adjustments at this time. He could try some psychological adjustment methods, such as positive self-suggestion to tell himself that there was a good side to the world and that not everyone was bad. He could shift his attention from negative people and things to things that made him feel happy, such as watching a favorite movie or reading a book that he was interested in. He could release stress through exercise. Running, fitness, and other exercises could stimulate the body to secrete endorphins and improve his mood. You can also find someone you trust to talk about your feelings, such as a friend or family member. In the process of talking, you can vent your bad emotions. At the same time, don't be too demanding on yourself. Set goals and requirements within your own capabilities and learn to appreciate your achievements. Try to treat others with a more positive attitude, discover the strengths of others, and express kindness to others. Perhaps you will find that the world and others are not so annoying.
In the 'Hate Me' manhwa, it mainly focuses on the evolving dynamics between two individuals who start off with a lot of resentment but things take unexpected turns. There are lots of twists and turns that keep you engaged.
Maybe it's because the plot is too confusing and hard to follow.
Maybe it's because of the plot. If it's confusing or doesn't make sense, people could hate it.
One similar manhwa could be 'Love Alarm'. It has similar themes of romance and drama.
The theme seems to revolve around the complex emotions and conflicts in a relationship that starts with love but is tainted by hate.
Love often takes the lead. Many manhwa focus on romantic storylines and positive emotions, making love more prominent.
Maybe she has some misunderstandings or you did something that made her feel that way.