like a fish out of water

be/feel like a fish out of water (be ill at easeбto feel out of place or uncomfortable with your surroundings) — быть не в своей тарелке; чувствовать себя неловко, неуютно; не по себе

Example: I didn't know a thing about politics so I felt like a fish out of water when my husband dragged me to the political convention. (Samantha)