My average subscriber gain dropped from 30 a day to 13 a day over the last 2 months. I need to regain the amount of traffic I had over the last 2 months. My first solution is to build 1000 exact match backlinks for each of my videos. I have around 60 videos. I own a music channel so I need to rank high for certain keywords. For example: if my video was "Justin Bieber - Love Yourself (Examplegiven Remix)" then I would build backlinks around the phrases Justin Bieber, Love Yourself, and remix. I've had videos ranked in the top 5 for things like that and it got me over 500,000 views. What do you guys think about this? I currently have 4000 subscribers on my channel. Really looking for some opinions before I do this. If I do it, I will post a case study before and after.