Use strong verbs like 'lost' and 'die' in it.
Gift, rejected, sad. Imagine you put a lot of effort into a gift for someone. It could be a handmade item or something you carefully selected. But then that person rejects the gift. It makes you feel sad because not only is the gift not appreciated, but also your feelings behind it are ignored.
The following are some words that contain the word 'sorrow': a Cuckoo (Legend has it that the cuckoo cries day and night until blood comes out, used to describe the extreme grief), Lonely Phoenix Dancing Mirror (A male phoenix that has lost its spouse cries sadly in front of a mirror, which is a metaphor for a person who has lost his spouse touching things and feeling sad.), a ghost fox cries (a ghost fire flashes, a wild fox cries sadly, describing a gloomy and terrifying wilderness night), a bird cries and an ape cries (generally refers to the sad cries of animals, describing a sad scene), and a mournful goose (a mournful goose cries all over the wilderness, which is a metaphor for homeless, hungry, and cold victims everywhere). "The Crow's Testimony" is equally exciting. Everyone is welcome to read it!
Think of a character and an action. Such as 'Boy laughed, toy broke'. Here we have a boy as the character, laughing as the first action and then the toy breaking as the second action which creates a very brief story in just four words.
Use colors. For example, dull or muted colors can set a sad mood. A grey background instead of a bright one can make the picture seem gloomy.
Think of a relationship ending. Like 'She moved on. I'm left in the past.' It's about capturing that one moment of pain or loss. You can also consider the loss of a dream, say 'Dreams shattered. All hope seems to fade.' Here, it shows the despair that comes with the loss of something one has been hoping for.
There were many sad online names such as: Sinking into Emotions 2. Sadness and Memories 3. Loneliness 4. Heartbreak and Pain 5. Sorrow and loss Decadence and Despair Remnant Dream·Impermanence 8 Heartbreak and Pain 9 Loneliness Sadness and Tears These online names all had deep emotional implications, and one could choose a suitable online name according to one's preferences.