OpenGameArt.org
Café ?
Credit line
"Café ?" by Swaylle licensed CC-BY 4.0: https://opengameart.org/content/caf%C3%A9 Author's attribution notice: Made by Skar0ps - https://skar0ps.itch.io/
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.