Lost all my iPhone 7 music

I was trying to download more songs to my iPhone 7 using the YouTube MP3 converter trick and iTunes and I happened to hit manually manage music and videos and it wiped all of my 256 songs on my iPhone. Is there any way I can get all my songs back I don't remember all the names and I did not buy them I downloaded them off YouTube please help this is very frustrating because i don't want to have to find and redownload them all

This is the downside if not having a computer backup. Once you delete them, they're gone…

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