Well you can never guarantee to get subscribers, and its really up to the individual watching your content whether or not they subscribe to you or not. I know people go on and on about this but the best things that you can do to improve your chances of not only being seen but also to encourage people to subscribe are, in my opinion : -
- Creating the best quality content you can
- Create great thumbnails to draw them in
- Make a call to arms in your video - ask them
- Utilise tags so your videos are seen by the right audience
- Be positive in your videos and respond to comments