The saying is of course “You can lead a horse to water but you cannot are it drink”
And that applies in many contexts
You can show a person a solution to a problem but they’ll still refuse it – for whatever reason they have.
Sometimes the real saying that should be applied is “You can only help someone if they want help”
Again, despite seeming to ask for it, when they get an offer of help that isnt EXACTLY what they wanted they’ll refuse the help.
Then what do you do bug shrug and say “I tried”