Filmyzilla is not a secure website. To download "Mahabharat Star Plus all episodes," you often have to disable your ad-blocker. Once you do:

Yes, historically, piracy websites like Filmyzilla have uploaded Mahabharat episodes. However, this is a cat-and-mouse game. When the series was airing or re-aired during the COVID-19 lockdown (2020), Filmyzilla created dedicated sections for "StarPlus Mahabharat All Episodes."

Typically, if you visit such a site, you might find:

However, these links rarely "work" reliably. Most links lead to:

This is the only official source for the Star Plus version.