I've watched those, the recommender algo he claims is simple. Whoever achieves the longest continuous views wins so you introduce every video with very brief 'here is what you are watching' then do that video you just described. What you don't do is long intros, music intros or not tell people what's going on.
The thumbnail helps but not as much in the past, it should just be something interesting and unique to the video encouraging viewers to click.
Like everything you should make it a story. Here is the build up and hook, here is the wow moment or climax. A basic programming video can be this.
That's all you have to do assuming it is well edited/audio. Edit: once he started having success he paid for translations because French/Spanish is also a huge YouTube userbase
Not for me because I did my own translation and became a meme because of my awful accent according to comments, currently my French translation is making money which I found hilarious because ppl are posting me as the idiot who has good videos for MSTs and linear programming. Anyway just have fun and don't worry about money if the content is what you would like to see you'll do OK. Guys like Mr Beast have teams of pros
