Thank you daichi! :)
For the shaders, it is not easy at first glance, especially on Unity (for me the shader graph misses some features in order to be user-friendly), even currently for me I don't masterize it fully, but the more I do shaders, the more I get accustomed to it. So, don't be afraid to jump in the shader system, I'm sure that you can do beautiful results with it, moreover, I can give you some tutorials if you are interested :)