Deleting and importing music via itunes
I had imported music to my itunes to install on my iphone 14 using the itunes app on windows 11. This was a few months ago. I have since resetted my phone and deleted the music on the phone with it. The issue is that on my itunes app on my computer, I can't delete the song that's in my phone's music (Like I go to devices -> Iphone 14 -> Music and there's my old music, but it's not on my phone anymore). I want to delete the music that's there and import new mp3 files to install on my phone but it won't let me delete them. How can I fix this?
Windows, Windows 10