How do you find or create complete solo guitar arrangements when all online tabs show is the single guitar line?

I've been playing classical for about 1 year now and recently acquired an electric guitar. The problem is I only seem to find on the internet tabs of what the guitar player is doing in a piece of music. In reality, a piece has a bunch of elements: drums, guitar line, bass, accompaniment, etc.

I would like to play a song and sing, but playing only the guitar line makes it sound too crude. How do you guys find more complete arrangements for solo playing of a song? I was trying to play and sing 'Creep', but doing only the background guitar line and singing doesn't sound that good, and playing the acoustic accompaniment sounds better on the classical guitar.