Local File Songs Not Syncing with iPhone

[yukikitsune027]

Premium 

US

Device

iPhone 11/Macbook Pro 

(iOS 13.1.13)

I have been working on this all day and its been driving me crazy. I have 4 songs that I have on my computer that I to play on my phone. I have literally tried everything to try and make this work.

I've added the Local Files with the 4 songs onto my desktop Spotify player and added it into a playlist that I made. When I tried to download the playlist for offline listening everything but the local file songs downloaded. I can listen to the songs on my desktop but it won't show on the mobile app. 

I've logged out of my account, deleted and redownloaded the app over 10 times (both desktop and iPhone), I've deleted the cache memory for Spotify on my desktop, I've tried syncing the desktop and phone through using my phone as a hotspot. Nothing has worked 

I was successful once in syncing the local file songs onto my iphone app but then I accidentally removed it from the playlist and now I can't get it to sync again.

Help desperately wanted , i just want to listen to the 4 songs on my mobile app