I went to the TV app on my iPhone, searched for Survivor, scrolled to season 41 episode 9, and saw I could watch it for $3, or you can sign up for Paramount+.
CanIStreamIt used to fill this gap but no longer.
You can use it on the web, too, and it shows which channels require a subscription: https://www.roku.com/whats-on/search I assume it's accurate for those services across other platforms than just Roku.
Presumably, if you subscribe to Paramount+, then you can also watch it as long as you are paying the monthly fee.
My point is I got to the media I was looking for rather quick. I would never spend my time watching Survivor for free, much less pay for it, but my opinion of the experience of trying to watch it was quick and easy.