anybody know if this is completed already?

Yes it is ! :))

do u know where I can find the completed chapters?

Yes, I‘ve read the russian ones but Im guessing you mean the raws.
Here’s the link:
https://funbe.cafe/적색영역

oh I've already seen those raws but it's not completed, could u send the Russian ones please ¿ :))

Ofccc here you go
https://yaoi-chan.me/manga/99418-red-area.html
Btww you can also join us on Discord to stay updated on the Red Area releases :))
(Btw Im the Uploader if you haven’t noticed haha)

tysm <3 just joined the discord server too. Also I didn't notice you were the uploader until you mentioned it but I really appreciate all your hard work :)))

(づ￣ ³￣)づ