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You need to be logged-in to an Adobe-ID, at that moment you have access to all free assets in Adobe stock, so you have also access to all free videos. https://stock.adobe.com/search/free?filters%5Bcontent_type%3Aphoto%5D=0&filters%5Bcontent_type%3Aillustration%5D=0&filters%5Bcontent_type%3Azip_vector%5D=0&filters%5Bcontent_type%3Avideo%5D=1&filters%5Bcontent_type%3Atemplate%5D=0&filters%5Bcontent_type%3A3d%5D=0&filters%5Bcontent_type%3Aaudio%5D=0&filters%5Binclude_stock_enterprise%5D=0&filters%5Bis_editorial%5D=0&filters%5Bfree_collection%5D=1&filters%5Bcontent_type%3Aimage%5D=0&order=relevance&safe_search=1&limit=100&search_type=usertyped&search_page=1&acp=&get_facets=1

Please contact customer care, https://helpx.adobe.com/contact.html, for assistance. Click on the chat icon in the lower right portion of the page. If you are unable to see this feature you may need to scroll down before it will appear or set your browser to private or incognito mode. Declining any Adobe Cookies may affect the presence of the chat feature.

free means free with an adobe trial or subscription.

do you have a subscription or trial?

Let me move this to the Download & Install forum for you, which I think is the appropriate forum for your question.

The Using the Community forum is for help in using the Adobe Support Community forums, not for help with specific programs, installation issues, or account issues such as subscription questions or billing problems, or generalized questions about Creative Cloud services.

* Product questions should be posted in the associated product community.
* Installation questions should be posted in the Download & Install community.
* Account issues, including subscription questions or billing problems, should be posted in the Account, Payment, & Plan community.
* Questions about the Creative Cloud desktop app or general questions about apps in the Creative Cloud should be posted to the Creative Cloud Services community.