A phone is a handy place to keep a video that you are allowed to save. You can do the process in a browser without installing a separate app.
Copy the right link
Find the video, tap Share and copy its link. Paste it into the downloader. Make sure the video is public; a private or restricted post may not open for the tool.
Find your file
After downloading, look in your browser downloads or your phone’s Files app. Depending on your device, you may be able to move the file to your gallery.
Keep it tidy
Give files useful names and remove copies you no longer need. A reliable connection and enough free storage can help make downloading smoother.