If you're not looking at your Analytics, you're not going to learn anything.
Below are charts I've drawn out based on my own video performance and how I've come to understand each one. It is then up to you on how you rework the current idea or decide to scrap it completely. The first thing I ask my students to go through, is their analytics because I found a lot don't understand or have looked at it ever.
So don't just look at the views, likes, and comments to determine a video's success. The graph is a super key point of information that the platform provides for you; use it!