๐๐ฟ: person frowning: dark skin tone, usually shown as a front-facing person with a visible frown.
This usually means feeling unhappy, disappointed, or frustrated with a situation.
People use it to say 'I'm not happy about this' or 'That's a bummer'. For example, you might send it when plans get canceled or when reacting to a mildly annoying piece of news in a group chat.