Meaning
A face looking down with lowered eyes and a drop of cold sweat on its forehead. Literally it is someone weighed down and sweating it out.
It suits hard work, stress, awkward situations and that sinking feeling after a mistake. It is also used for physical effort, like carrying heavy bags upstairs. It is calmer than the panicky 😰. Example: “Fifth floor, no elevator, and I bought a watermelon 😓”.