Even if you find a free version, the quality is usually terrible. Expect 240p resolution, Chinese or Arabic watermarks, mismatched audio, or the movie being cut into 10 different parts on YouTube (which will eventually be taken down by copyright strikes).
Watching on these platforms requires a subscription (ranging from ₹299 to ₹999 per year). Compared to the cost of a virus removal or a court notice, a subscription is a bargain. sivi tamil movie free