Because not everything has to have a video tutorial. You don't see video tutorials about how to build a car engine in your backyard either, it's something you have to work hard for and learn from scratch, unless you just want to steal the parts or pay somebody to do it for you. And just because nothing goes missing when you steal code doesn't mean you should steal code without creditting people and complain about nobody having made you a damn video.
If you can't do what you want to do, either goddamn learn it by reading documentations and experimenting or start with something simpler that you can do, otherwise you're just an asshole leeching off off the hard work of others.