What is a social skill nobody teaches properly?

[Maxximus]

There are obvious social skills like listening and being polite, but some of the most useful ones are never really taught. How to leave a conversation gracefully, how to disagree without making it weird, or how to accept a compliment without looking like you want to vanish.

A lot of adult life is just improvising these little moments and hoping nobody notices the awkward seams.

What social skill should people actually be taught?

[Connor82]

How to say no without giving a full courtroom defence

[Nina24]

How to end a phone call naturally. I still make it awkward

[Faded Owen]

How to apologise properly without adding excuses at the end

[Ellie_28]

How to introduce two people when you have forgotten one of their names

[Bussin99]

How to receive criticism without instantly becoming defensive