Don't feel too bad, mistakes help us grow. To improve, you need to practice the language. Get a tutor to help you with conversation practice which will improve your grammar and pronunciation. When you know how to say something, it's easier to write it down. So tutors, language partners, videos/tv shows and pay attention to your reading material, the structure of sentences etc I hope that helps.

@Nanren888 Thank you Nanren for correcting my question and yes i'm trying to do my best but i still make mistakes that's why i'm asking .

Not so helpful, but I don't see you have many options. While it is not natural, you must check, check your books, software, people, tutors, teachers, random chat partners, friendly souls who will check work for you. When you get a lot more practice, it just seems right. It will come. My question is how to get over this ? I'm reading books in English and I'm living in an area of a non-English speakers. Capitals - when those lower case letters starting sentences and on "English" start to scream to you "FIX ME!" then it's becoming natural. :) ... reading books ... Enjoy, work hard, be great :)

I don’t understand your question.