Ninja Technique to gain Subscriber

I have one channel related education and I used to upload long video but I was not getting views ,subscribers. then I started to make short video. But it really worked form me . In one month 50k subscriber achieved.

When you publish a Short, you create an opportunity for your content to be viewed; subsequently, that view may result in the viewer subscribing to your channel or in the viewer engaging with the content published on your primary channel.

YouTube shorts will a great way to get subscribers and views.

Shorts are exploding lately
a tiktok clone tbh

Shorts are being promoted by YouTube that is the reason.