To download your original uploaded video, navigate to the Project that holds your video and find the video in the Project.
Click on the 3 dot menu to show small window, then click the COPY icon:
Then paste the link into your browser and the video should start to download to your machine.
Please note that this will only work if the video was uploaded to Spotlightr after May 6th 2021. To download a video that was uploaded before that, please enable the download option in your player controls. And then once you've downloaded it, you can disable that option.
Please note that linked videos are not physically present in Spotlightr, therefore they can not be downloaded.