These don't appear to be WS2812. Look at the Ali link he posted. There is a pic of the wires that show four conductors on the strip: 12V, red, green, and blue. I think this is an analog RGB strip where are the lights in the strip are the same color vs. individually addressible.

https://www.aliexpress.com/item/1005005485885067.html

Anybody wanting to do anything with LED lighting owes it to themselves to look at WLED. Lots of built in effects, web gui, super cheap ESP32 (or ESP 8266!) as the controller, sound-reactive, etc etc etc. WLED is running my indoor Christmas lights right now and they look great.