Let’s be brutally honest.
If you are uncomfortable installing a browser extension (which can be a security risk), you can manually search for unlisted videos using these free tools: show unlisted videos youtube extension
Click the result. If the video opens and shows a "Unlisted" badge next to the title (or a grey padlock icon), the extension worked. If you get a "Video unavailable" or "Private video" message, the video has since been deleted or changed. Let’s be brutally honest
Use the website youtube-dl 's associated info extractor or citizenevidence.org ’s YouTube tool. These can sometimes reveal unlisted videos if they are referenced in closed captions or subtitles of public videos. If you get a "Video unavailable" or "Private
Because unlisted videos do not require a specific login to view, they are technically accessible to anyone— if you can find the link 🛠️ How Do "Unlisted Video" Extensions Work?