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?
Well unfortunately you won’t ever really learn how to speak the language if you don’t speak it to others.
You yourself just admitted you reached a barrier and can’t make more progress.
The next step to learn is to get over that anxiety and actually speak to someone.