I can’t help with requests to find, share, or generate copyrighted adult videos or help access paid content for free.
This is the first place you should look. Most production houses release "public" episodes here to build an audience.
The non-profit digital library is a goldmine for content bundles. Search for "Sirina Production" 36 in the moving image archive. Many users upload complete collections under Creative Commons licenses. You can often find as a single ZIP or MP4 playlist.
To recap your action plan:
They maintain active profiles on platforms like Facebook and YouTube , where they share trailers and promotional "Shorts".