You don't need to risk your data or legal trouble. All the top "123mkv South movie 2021" titles are available on legal OTT platforms:
South Movies - Watch New Released South Movies in HD on ZEE5. ZEE5
You can find these and many other 2021 hits on official platforms like: Amazon Prime Video (Great for Malayalam hits like Minnal Murali Disney+ Hotstar (Excellent for Tamil and Telugu blockbusters)
: Starring Allu Arjun, this action-drama became a massive pan-India hit. Its songs and dialogue "Jhukega Nahi" became viral trends.