Deleting online-only files made me lose all my files, how do I prevent this in the future?

Thanks this clearly answers my question much appreciated. I have a feature request that is important: when you use online only and go to delete the placeholder files it should give a warning dialog to the user saying “if you delete these files they will also be deleted in the clouds”, because it did not give me this warning and because it’s counterintuitive to some people that this would be the case I lost over 1-2tb of my files. So dropbox and my own misunderstanding was the cause of me losing my files instead of dropbox supposedly functioning as a tool to protect and backup my files. This was a sickening experience and now I know what happened. This needs to be fixed , I an SURE I am not the only one who has lost A LOT of files this way. Also there should be a way once they are online to delink the placeholders, so that if the placeholders are deleted it would not delete them from the cloud. I can’t believe this has not already been implemented. I don’t work for dropbox, and these seems obvious to protect peoples files. I am trying to helps so this [removed] doesn’t happen to other users again. [removed]. An obvious oversight. Once it was uploaded to online only its not so obvious to the user that deleting the placeholders on the computer would also delete them in the cloud, very dangerous and probably has lost many of your customers their files due to this being unclear.