out of one's element
01
場違いでいる, 居心地が悪い
in a place or situation that is unsuitable or disadvantageous to one
idiom
例
As an introvert, attending large parties is out of my element, and I often feel uncomfortable and overwhelmed in those social settings.
格式ばった夕食会で、彼は居心地が悪そうだった。
