idiom
A friend to all is a friend to none
Alguien que trata de complacer a todos puede terminar sin complacer a nadie
Meaning
Someone who tries to please everyone may end up pleasing no one
Example
He is friendly to everyone, but he has no real close friends because **a friend to all is a friend to none**.
Él es amigable con todos, pero no tiene amigos cercanos reales porque **un amigo para todos es un amigo para ninguno**.