Writing a Short Story

I love to write fiction stories.* I like to write flash fiction, a short story that has only a maximum of three hundred words. (or you could say 'a short story with less than three hundred words' - more informal) I am trying to write flash fiction in English, but I can't.
Usually I write in my own language, Indonesian. When I was trying to write in English, I found myself stuck with words. I can't find a better the right word to describe what I want to tell say.*
I think using the right word in a sentence is one of the main points when writing a stories. It can help to make a better story, so the story doesn't sound cheesy. I find many of stories was are cliche, have same main idea, but the writers can make the stories better with  by choosing the right word in the sentence with different conflict.*

* you could say either stories or fiction but it sounds strange to use both. If you say stories it is assumed to be fiction.

* tell puts a focus on the person you are telling the informationt to, so when you are writing a short story, it's a bit strange. You could say tell if you are writing to a particular person, say a letter. Or if you want to make the sentace focus on the people who will find out eg. 'we are writing to tell the world about our sufferening'.

* Not sure what you mean by 'with different conflict'.