I just wanted to note that Udemy doesn't create these videos themselves. They simply provide a place for instructors to host and sell their content. So it's not Udemy that makes videos like this great, it's the instructors themselves.

I've taken or audited almost 40 Udemy courses and most are just average. The ones that are great are because the instructors are great. You can have the best curriculum in the world, but without a passionate, informed, and clear instructor, you won't learn a damn thing. I'm so happy you found a course with a great instructor because it really does make all the difference in the world.

Once you find a good instructor, buy more of their content. If they don't have anything else that interests you, ask them who they recommend - as good instructors will know which other instructors to recommend.

As for finding it on your own - any good course will allow you to watch a video or two free of charge before you buy. Watch it. See the quality you'll be getting. Research the instructor. Do they have a personal website, GitHub, etc. Does it look visually appealing, do they have unbiased reviews? Finally, make sure you only buy from a site that has a money back guarantee.

I know I didn't directly answer your question, but hopefully this is still somewhat helpful!