Actually, most of the raw footage comes from instant messaging(WhatsApp or Telegram, mostly), shared in groups with an agenda. Then it is shared on TikTok, Twitter etc. to a wider audience where it is curated and censored by algorithm that optimise for something(engagement, impression, revenue, agenda and so on).
Which means, instead of getting our news from journalists on the ground who know the context(at least the good ones) we get a snapshot of the event curated by an algorithm or people the way the analytics told them to.