Most services you buy views from are bots... I'd suggest hiring VAs off upwork to view your complete video. You can make sure they do it by requiring a screencast video of them watching it.
Create a link off youtube (on a forum or some social media - NOT FACEBOOK) and have your VAs go to your video through that link (Session starts - ranking signal).
Then, have them watch the full duration and like, comment, sub, add video to a playlist, and share on some social media. Before they leave YouTube, have them click through to a related video (not yours) and then exit Youtube after a couple seconds of watching the new video.
Session Duration: How long do new sessions stay on youtube's platform after watching your video. You get +1 for referring.
Session End Penalty: -1 for sending people off youtube on your video. You avoid this by sending them to another video first.
You should be able to pay around $1-2 dollars/100% view which seems like a lot but they will do much more than any high volume paid views will.
10-20 of this should be enough to get your video over the 'tipping point' in which YouTube will start recommending your video.
Cheers