In iTunes, how do I see my purchased albums, uploaded CD's from my personal collection, and the music/albums as part of my Apple Music Subscription?

I have noticed that iTunes is now very clunky and often crashes or freezes. It is an excellent piece of software for managing, uploading, and purchasing digital music. I am a music teacher and fan, so it is important. But how do I differentiate between my own uploaded CD's, my purchased albums (from iTunes), and the music which is in my iTunes from my paid Apple Music subscription? This is all very complicated and needs to be fixed somehow. In iTunes, all my many albums and songs are simply al mixed up all over the place and there's no option to right click on any thing to see what it is, as in MY CD's, MY purchases or Apple music songs (which I know will disappear should I stop paying the subscription fee). I would like to hear ideas from other Apple users regarding this dilemma. Many thanks!