My music is all gone

So my Apple Music subscription expired like 3 months ago, and my friend payed for me to use Apple Music but on her other Apple Music account, so I was logged in her account for 3 months, today I added funds into my account so I can have my music library back, but all my music is gone, I tried deleting the app and reinstalling it, I also tried the log out my Apple ID and re-enter it but nothing worked, I had over 100 music (from what I remember) and it’s making me really upset that I don’t have any of my music anymore, the reason I added fucks to my account is because I wanted all my music back (since I was too lazy to add all the music I had before on her Apple account), please if anyone could help me I would really appreciate it.