There are channels on YouTube that aren't made to make money from monetization and stuff, they're made to collect a lot of traffic, because their copyrights always take monetization away from the copyright holder of the material.
You need to take and come up with your own concept, such as snippets of dialogue, or some epic, cool, funny, etc. moment. An example of such a channel.
There are smaller channels, because they are relatively new and their trust on YouTube is a little bit lower than for those who were created a long time ago, but that doesn't mean that you can't repeat it.
You may monetize all this incoming traffic in different ways. For example, you may plug financial offer from some bank, or collect donates for your project, or pour it into Telegram channel, with 18+ and 21+ scenes (like violent or sexual, because YouTube won't let that happen). You can do that to further sell ads in your Telegram channel. You can also pour over your sites, which will already have a lot of affiliate links and contextual advertising.
Then you need to download movies (torrent or otherwise), most importantly, that there were no water marks. Then you take an editing program (such as Adobe Premiere Pro or Openshot) and cut out moments from this movie, sign them and tag them with the appropriate genre and publish them on YouTube.
At first you have almost no result, but if you do it every day, then after 2-3 weeks you'll see how views will grow by times, plus subscribers will increase.