Something more comprehensive.

Hi all, I don't know if this is the appropriate place for my question and if not feel free to redirect me. I have been learning bits and pieces of music theory for a few years now, and I find it very fascinating. If it's relevant - I am not a musician, I have only ever toyed around with a piano and I'm not all that interested in learning how to play an instrument. However I love analyzing art. I started out with the basic stuff: notes, rhythm, meter, major and minor scales, degree, triads, seventh chords, modes and so on and so forth.
As I have developed my knowledge of these fundamentals further and further, I keep finding myself frustrated by the lack of depth of my knowledge. For example, I have learned much of the theory I know from MusicTheory.net, and while its super helpful it doesn't shed light on a lot of the stuff I want to know about, for example there seems to be a wide array of literature on the analysis of much classical music ("classical" in the broadest sense - from Haydn to Bach to Chopin to Mahler to Stravinsky), but this analysis seems to use a language built off of music theory but with much more depth and many more technical terms.
Specifically, I find Bach really interesting as a composer but can't find any concrete and shan't way to learn the basics of counterpoint like MusicTheory.net. I'm also interested in a wide variety of music topics - microtonality in Indian Classical Music, jazz as a musical form, why Wagner's operas were a big deal, and serialism. I'm interested in how to deconstruct popular music genres as well as classical art music into their smallest parts and then putting them back together again to see what makes them work. Basically I'd like to have a level of intuition and knowledge that lets me read a random article on mtosmt.org and have some level of understanding. If anybody could offer any advice on how to find out more about advanced stuff like this please let me know!