Even with a VPN, downloading copyrighted material is illegal. The VPN hides your activity, but it doesn't make the act legal. Furthermore, many VPNs log your data, creating another privacy risk.
Illegally, yes. Isaimini often pirates Netflix originals within hours of their release. Legally, Netflix itself offers high-quality Tamil and Hindi dubbing for most of its originals. isaimini dubbed movies web series
Amazon Prime Video currently has the largest library of Hollywood movies dubbed in Hindi, Tamil, and Telugu (including all DC and Warner Bros. titles). Even with a VPN, downloading copyrighted material is illegal