Hello, and welcome!
Personally I also felt intimidated by the neatness of the flies that resulted in YT videos (the channels that are recommended by David are very good and I feel like I watched hundreds).
Just to echo the others that neat flies aren’t necessarily ideal for catching fish. Hunters have an intuition for what injured prey looks like (lions vs old/lame Gnu for example) and will tend to prefer it as the engery in vs energy out is a better trade off.
I’d strongly recommend you take a look at the Discover Tenkara content. They have a lot of free advice on their videos, but the paid content is affordable and very high quality (and the book called something like “how to fool fish with simple flies” transformed my understanding of both the “why” of effective fly tying and the “how”). They have a short video series for sale on tying tenkara flies but they are full of general tips from a lifetime of very practical experience (ie making flies to catch, not to put in a display cabinet)
Worth noting that John and Paul at DT both have a background in the academic study of fish and their environment, so their content is very well researched and science based.
Do drop me a message if I can help and keep on experimenting (and showing us how it’s going).