Generally in English (at least American English) we would say "I was born in Lithuania on March 25, 1997." The next sentence is a bit confusing and took me twice to understand what you were saying. A way to fix it as it currently is written would be "Lithuana was a post-soviet country that was recovering from Russian captivity at the time." A more clear construction would be "I was born March 25, 1997, in Lithuania, a post-soviet country that was recovering from Russian captivity." All my life, in school and at home, I've heard how Russians tried to destroy our nationality and how many people were hurt by them, but that doesn't matter anymore. "Anyway" to begin a sentence isn't necessarily wrong, but it isn't needed. You can just continue "I grew up ...". "It is a small town but not so small for Lithuania, Kaunas has only 299 601 inhabitants and one of them is me." This is a run-on sentence. Place a period after Lithuania and start the next sentence ""It is a small town but not so small for Lithuania. Kaunas has only 299,601 inhabitants and one of them is me." Or even "It is a small town, although not small by Lithuanian standards, with 299,601 inhabitants including me. " "My family has been a typical middle-class family, we couldn't afford a lot, but we weren't the poorest." This isn't bad but the tenses seem a little strained. Something more clear would be "My family was a typical middle class family. We couldn't afford a lot, but also weren't the poorest." Or to keep using "has been" you could construct it "My family has been a typical middle-class family. We can't always afford a lot, but we aren't the poorest." "Has been" denotes that your family was and still is typical middle-class. In the next sentence saying "we couldn't afford a lot" puts it all in the past. I definitely understand it as a native speaker but it does feel a little weird. Very good though! This is me being nitpicky. Your sentences are very understandable for the most part.