I bought songs from iTunes then later in the day I couldn't find the songs it said I need it to buy it again and I can't find them in Music?

How do I fix this? I want my money back then

I'm in iPhone 8 plus by the way.

Probably went into the wrong app or you didn't actually buy them. Don't ask us, ask apple

Not a problem, just call Itunes customer Support for help

Could contact Apple Support on Twitter concerning that.

Check your e-mail. If you didn't get a receipt then you never purchased the songs.