I recommend the book " Tiger and Twin Flowers ". The female protagonist liked the male supporting character in her previous life. After her rebirth in this life, she gradually liked the male protagonist and treated him well because of his unique charm. The male protagonist's health was not very good, and he would experience mental breakdown and blackening in the later stages. I hope you like my recommendation, Mwah!
Well, getting better at fiction writing involves paying attention to details and description. It's also important to study different writing styles and experiment with your own. And always revise and edit your work to make it the best it can be.