Meaning of the word "it's no use doing something" in English

What does "it's no use doing something" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

it's no use doing something

US /ɪts noʊ juːs ˈduːɪŋ ˈsʌmθɪŋ/
UK /ɪts nəʊ juːs ˈduːɪŋ ˈsʌmθɪŋ/

Idiom

there is no point in doing something; it will not achieve anything

Example:
It's no use doing something if you don't put your heart into it.
It's no use crying over spilt milk; what's done is done.