Indian stations are never empty. Good route add-ons will include 3D crowds, chai vendors, and porters. If a station looks empty, you are missing an "Asset Pack." Always check if the route developer requires a specific asset pack (often listed as a dependency on their site).
A locomotive is nothing without rails. Indian addon routes range from hyper-realistic suburban networks to grueling ghat sections. train simulator classic indian addons
If you are looking for free content, community forums are your best bet. Indian stations are never empty