I stayed on Win7 until December 2023, until there was some exploit that was attackable by just viewing an image, so just browsing the web would've made it vulnerable (I believe in the WebP format).

Although it seems there are people still Frankensteining Win7, and even patching DLLs to make the newest browsers/apps still run on it.

Famously MS Teams was really screwed up, but I had to use it for work..