Hello Dinara! That's an interesting question and I'm sure you'll receive lots of different answers. I really enjoy learning and teaching language through real materials in context. To learn German I love reading German articles, watching German TV, listening to German music, etc. What do you think?

I learn languages faster when I really try not to use my native tongue. It's like learning the whole world again. I have to think of the sounds and words to express what I see, do, feel, want, and fear. I know this doesn't work for everyone though. Everyone has their own way of learning everything. I really liked this question!

Hello dinara
For me the best way is just practicing what we have learned. When i was kids, i learned two language with the same time and i don't need to learn grammar or anything else. I just practiced

For me it’s daily exposure to the language, especially in small increments (max of 45 min). Anything longer than 45 minutes, and I tend to get a bit distracted. 

Small group classes (3-6) with fellow-students at a comparable level of proficiency in the target language. The unspoken competition, camaraderie, games and activities etc. 

I think if you could find study partners in your local living area (or perhaps a person online) that would probably be very beneficial to you. Just make sure the sessions are focused on the task at hand, practicing the German language, and not just "hanging out". Cheers.