Considering the low view/impression count I don't think the quality of the video itself is the main issue here. Because at the end of the day, no one really watched it yet (not meant to be mean, but in the big scheme of things, 20 views is nothing). Thus, I think we should look more at the T&T AND Topic. But I'll focus here on the topic.
The low impressions mean that youtube doesn't show your video to people, because it thinks they are not interested. If you look at your most popular video (Which animes not to miss in summer), it's clear that this will be appealing to a lot of anime fans. That video has probably 10k+ impressions. Same with the 2nd best performing video (going back to the RTL 2 feeling). I don';t know a single person who watched/watches anime and didn't have their first contact through RTL 2. HUGE appeal because it was an amazing time in one's life. Of course I want to know which anime brings me the same feeling.
However, the last two videos are way more niche. If people don't know "kaiju no 8", why watch the video? If they don't know "Cowboy Bebop", why watch the video before? I think those videos might perform better when your channel is more established. Then, people will watch the videos for you or your recommendations (like for ninotakutv). But you don't have this kind of authority yet. So people watch the videos for the topic and stay for you.