WD external hard drive wont show on my macbook, HELP!

Thanks, I’ve already tried this aswell but I’m still not having any luck whatsoever. I have a feeling it’s a mechanical fault in which case I’m screwed. But if you know of anything that may help my MacBook detect that it’s connect it would be greatly appreciated as this hard drive had all my uni work on it which I did not back up. :frowning: