Ok new update, I wrote this quoted text on 20 August.
One month and a half later (today) I reached a new milestone. 300 subscribers and 200,000 views! I am very lucky to have that many views with such a low number of subscribers. What I find out until now is that one of the most important things are thumbnails. If your thumbnail isn`t catchy then you don`t have any chance. If you have a good thumbnail (perfect combination with this are good keywords) that will help you to reach some new audience and potentially new subscribers.
Thank you all from yttalk community, let`s see how much time I will need to hit 400