Romanticism was a reaction to the sterility of Neo Classicism and the Baroque before it. Realism was spurred by the failed revolutionary movements of 1848. There was a sharp change in social views. It is shown in the harsh light and subject matter of Realistic art work.
Well there are some things you can try. ProWritingAid is a great website which drastically improved the quality of my writing, I have a premium subscription and am very happy with it. Other than that, it is important to work through with other people who are better at writing so they can guide you.