YouTube used to be all about the unlisted method, fast views and engagement, etc. At this point in time most people who target long term video rankings focus more on drip feeding services at a consistent rate for 2-4 weeks. It's a more difficult process; you've gotta find services at the speed you require, put effort into managing a good drip feed strategy that mimics organic activity, etc.
I usually recommend to newbies to do the majority of the total services they need in the first 1-3 days (depending on total amount of services being used and the services that are available to you within your budget), then slowly drip feed the rest as evenly as possible for at least 1 week, preferably 2+ weeks. The services you use would be determined before you begin your boosting campaign via an analysis of your competitors videos.
As a general rule, you should try to boost all possible metrics in a way that replicates organic activity. Let's say that hypothetically you needed 10K views, 300 likes, and 150 comments to match your competitors video stats; boosting those is the bare minimum. From there, if your competitors video has lots of replies to comments from other viewers and from themselves, at the very least you should like a handful of comments, leave some replies, etc. so that youhave comment engagement as close to real as it can be. Same goes for social shares; with those views, likes, and comments it makes no sense for a video to have no social shares, you can buy these for cheap from most smm panels (do your own research and estimate the amount you need to match an organic view to share ratio). As for playlists, if you have all those views and engagement and your video isn't in a single playlist, and your competitor has the same amount of views and engagement but theirs is real (so they probably are in several playlists), at the very least you need to create a few relevant optimized playlists on your own channel.
With that info in mind and the info everyone else shared, develop a new video ranking strategy, prepare a new video, then upload and execute