If you want to manage and control your own music library, you're not Apple's intended customer. If you are inside the Apple ecosystem, they expect you to play

If you want to manage and control your own music library, you're not Apple's intended customer. If you are inside the Apple ecosystem, they expect you to play entirely within their ecosystem. I suggest you try using an Android phone, where you can easily drag & drop any files you want, and can manage them with any program you choose.