交際 こうさい上手 じょうずじゃなかったです
kōsaijōzujanakattadesu

Noun
Desu Copula
na-Adjective

The polite, past negative form of 交際上手

1. Wasn't good at socializing.; Wasn't skilled at interacting with others.

Past/Perfective
Negative
Polite
Casual Register