I'm an ESL teacher, and I just want to say to anyone learning English, or any second language, who worries about sounding just like a native speaker- some of the most artistic, interesting, thought-provoking, and just downright cool/fun English turns of phrase that I have seen have come from non-native speakers constructing sentences in a way that native English speakers would never think to.
I worked with an older man from China once, reviewing the poem he had written. Not only was it a breathtakingly beautiful poem in its sentiment and imagery, but the way he used the English language to express this sentiment and imagery in the lines and verses was constructed in a way that I don't think a native speaker would ever have come up with. None of the unconventional phrasing impeded my ability to understand the poem, and what he regarded as 'errors,' I saw as a vital artistic element to the prose. I told him even that while I can tell him what a native speaker would say insofar as word order, etc., I honestly thought it would take something away from the poem rather than add to it if he wanted to alter his work. His phrasing was creative in a way that brought something new and beautiful to the art form.
I've had similar thoughts of stories I've read, songs I've heard, conversations I've had, and more.
Please don't be discouraged on your journey to learning any language. And know this, especially coming from an intensely monolingual culture in the US and with the global presence of English, your version of English is just as real and authentic as native speakers' English. You have value to add to any conversation, you have value to add to art and science and anything in between. Your choice of words and phrasing is a worthy contribution to any social, professional, and/or artistic scenario, regardless of how close you sound to a native speaker. The unique variety of English you bring from the influence of your native language(s) and personal idiosyncrasies add to the English language, they do not subtract from it. It brings new words, new cultural expressions and phenomena, new ideas, new art, new slang, new curse words/phrases, new jokes, new terms of endearment and phrases of comfort, and so much more. Language is a beautiful, ever-shifting, ever-evolving entity. All of its permutations merit respect and celebration. So, in all honesty, thank you for sharing your own unique flavor of English with the rest of the world. We are richer for it.
TL;DR - there is no singular correct way to speak a language, and the influence of other cultures and languages on English spoken by non-native speakers is awesome and enriches all of us. Be proud of your unique expression of the English language.