Latin "ad" is more like "to" or "toward", but I've never seen it used to mean "about". FWIW.
You might be aiming for "ab", with which autocorrect will likely refuse to cooperate.
in german the latin "ad" is used as "about that point" and even part of the Duden (basically the official guide to the german language)
https://www.duden.de/rechtschreibung/ad
did not know that its more a german thing.
Latin "ad" is more like "to" or "toward", but I've never seen it used to mean "about". FWIW.
You might be aiming for "ab", with which autocorrect will likely refuse to cooperate.