Well, you need to look at the entire year. You haven't been making content for a year yet. Most of your views will come years down the road. The real question is do you care more about the b-roll or the views? If your sole reason to add b-roll was to get more views, then you've missed the point. The point of b-roll is to help you tell a more compelling, deeper story. You can never film with an expectation of some guaranteed result. In other words, you destroy the film.
Also just because you have found an excellent keyword doesn't mean that that keyword is a quality keyword, nor does it mean that you are guaranteed lots of views from using said keyword. The point of getting an excellent keyword is that you can more easily rank for it. The results of which no one knows. I argue you won't know the true results of targeting that keyword for the next year at least.
If your primary motivation is getting views, then people will sense that and stay away. If your primary motivation is producing quality content or serving a specific people group, you will build an audience over time. That audience may be big, it may be small, but you will develop an audience.
From looking at your channel, your Wal-mart video "took off." You made a follow-up video, and it ran flat. That's how it is. No one can predict "success," despite what all the habit books talk about. People don't like the sound of it, but you have no control over how many subscriber you get, nor the views you will amass. The only things you can control are:
- the quality of your content
- the quantity of your content
- the length of time you spend producing the above, i.e., short-, mid-, and long-term.
The results of the content simply, no one knows. You simply gauge the results over very long periods of time--one year at the barest minimum--and make decisions from there.
Also most anytime you start cranking out more videos, you will see some drop off. As you may be producing content at a faster rate than they can watch. This isn't a bad thing. Remember your current audience and your future audience are two separate people groups. The people watching your content today may not watch seven years from now. If your content only appeals to here-and-now, you will never be able to build anything toward the future. Produce content that will be relevant seven years down the road, and you will pull traffic for years on end.
In my business all my sales come from videos I did years ago. If all I did was appeal to the here-and-now, I wouldn't have a business.