Meaning of the word "you can lead a horse to water, but you can't make him drink" in English

What does "you can lead a horse to water, but you can't make him drink" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

you can lead a horse to water, but you can't make him drink

US /ju kæn lid ə hɔrs tu ˈwɔtər, bʌt ju kænt meɪk hɪm drɪŋk/
UK /ju kæn liːd ə hɔːs tu ˈwɔːtə, bʌt ju kɑːnt meɪk hɪm drɪŋk/
"you can lead a horse to water, but you can't make him drink" picture

Idiom

you can provide someone with an opportunity, but you cannot force them to take advantage of it

Example:
I gave him all the study materials, but he still failed; you can lead a horse to water, but you can't make him drink.
We offered her a promotion, but she turned it down. You can lead a horse to water, but you can't make him drink.