Can't sync local T-Swift files to Spotify for iOS from my Mac

[user-removed]

I have the 1989 MP3s (legally purchased) that I'm wanting to sync to Spotify, as I do not use iTunes at ALL and 100% of my music is through Spotify.

I am following the instructions but because I think the album information is still on Spotify, I can't sync the files to my iPhone. Since the newest desktop version removed the "device" category I can't just drag the files.

How can I get these files to download to my phone? THEY ARE LOCAL FILES!!!!!!!! I really want to listen to these in shuffle mode with the rest of my music, not isolated within another app.