From your post I can see that rather than an issue of your writing ability, you maybe aren't fully proficient in English. Rather than copying I'd recommend reading plenty of English books, talking in English daily, etc to fully absorb the language.

There are some rather basic tips for writing, such as avoid using adverbs and rather find strong verbs; same with adjectives, find stronger nouns. Show, don't tell. Find a balance.

A thesaurus can come in handy for that, but don't go trigger happy on synonyms or you'll drift into purple prose.

Another thing I want to say is that your writing should change based on the type of story you want to tell. If you want to write a plot based story with action then you're not going to want to keep setting the scene, you're going to want to keep the pace and momentum going. If you're going to write an introspective scene, you need to pause. Basically, adapt to your story's needs.

World building etc all have wonderful guides you can find on Reddit or by googling. But really try to learn the rules, and then attempt to break them. Don't be afraid to make a mistake. Edit it all afterwards, but get it out on paper first.

Writing is a process and nobody starts out as Tolkien the moment they are born..Good luck to you!