Share large files? Then use wormhole. Send files up to 5 GB, they get encrypted, and it uses webtorrent tech to make it work. Highly recommend.

Not sure what a technology-enhanced movie is, or what you're asking really. You want like torrenting tracker sites? Search on duckduckgo (or one of the sites recommended here https://www.privacyguides.org/en/search-engines/).

Let me know what you need, I'll give it to you!