It could be because of a sudden plot twist or a bold new direction for the character.
Well, it could be that some villain did something really bad that pushed Spider-Man to the edge and made him angry. Or perhaps there was a misunderstanding that got him all worked up.
Could be that the storylines have been exhausted, or there might be a shift in the market demand for different superhero comics. Also, licensing and rights issues could play a role.
It could be that the comic shows Spider-Man facing difficult choices or losing someone close to him, which makes it sad. Also, the tone and atmosphere of the art and writing might contribute to the overall sadness.
It could be that Spider-Man is hanging to avoid being detected by enemies or to reach a hard-to-reach place. Sometimes, it's just for a dramatic effect in the comic.
Spider-Man could be sad in the comic because of a personal tragedy, like the illness of a loved one. Or perhaps he's feeling down due to a failure to protect the city as he hoped.
Maybe it's the creepy art style or the intense and suspenseful moments that make it so. Also, the themes explored might contribute to the creepy feeling.
Maybe he's facing a really tough challenge or has lost someone dear to him.
It could be due to poor handling or storage. Maybe it got exposed to moisture or rough handling that caused it to tear or get damaged.
The Spider-Man comic could be sad for various reasons. It might be due to the sacrifice of a beloved character, or a situation where Spider-Man feels powerless to save someone important. Sometimes, it's the internal struggle within Peter Parker that brings a sense of sadness.
I have no idea. Such a search seems inappropriate and might be related to some odd or unethical interests.