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?
Conversation with someone who natively speaks English but also speaks your native language as a second language, mutually assured learning.
Another one is english crossword puzzles. They will expand your vocabulary and somewhat help with usage and meaning. It does require a fair amount of pop-culture knowledge, but you can Google the hints and find crossword solution websites to help. It also exposes you to words that conversation won’t typically have and synonym words to more common words.