Now I can watch some films with subtitles, read texts(I think my level is about A2 - B1) and understand the main point, but I feel like I need somehow to expand my vocabulary. I tried to learn new words using flash cards and it’s seems effectively. But too boring for me and I just can’t do it. So, maybe you can give a couple recommendations?
Speaking to people is a great step. Even texting helps. Here’s a thing I used to tell my students when I was teaching English: if you speak and hit a word that you don’t know, find a way “around”. Don’t get hung up on one word. You’ll get comfortable forming sentences, navigating around words you don’t know. That’ll help with fluency.