Could i please get assists

I sent btc to an account and the blockchain says its spent i don’t what that means but the the person i sent it to hasn’t recieved it. I used my luno account how do i get my money sent.??? Help please.

https://www.blockchain.com/btc/tx/a1ba9148fc40c1e4e1f783ddd0e58b84d2f22960a3ff159a17d825289f278239