Official apps like Watcho and Atrangii often allow users to download content for offline viewing within the app itself, provided they have a valid subscription.
Stick to official websites and platforms. Not only is it legal, but it's also safer for your devices.
If you’d like to watch a series legally, I can help you:
While users may search for "free download" options, legal viewing is restricted to authorized subscription-based or ad-supported platforms: