It is all possible to create 1k subscribers for your youtube channel without doing anything but what is your point of intention? You should be certain about choosing the options between either going with people who can do it for some small payment where these subscribers will automatically fade up in a period of time and you felt like everything got wasted for what you spent or, creating dynamic and informative contents to keep increasing your subscribers slowly on a constant basis in upward momentum.
Let's say to increase followers on one of our e-commerce-based Instagram page, we spent some $$ with service providers from the marketplace to quickly increase our followers' list to 10k followers, and finally, it happened in a few hours. later in 15 days on a gradual time period, almost half has vanished. And in the next 1 month, nearly 90% of followers have gone out.
Decide what you wanted to do.