What about something like this?
https://www.ccleaner.com/recuva
Two provisos:
- CCleaner is well-respected (despite a recent brush with somebody hacking their downloads to piggyback spamware; that supposedly was dealt with) but use their programs with caution. Know what you are doing! Read!
- Move quickly, if you are going to. The more time that passes and the more you use your computer, the more likely it is that your lost file (which may not actually be lost yet, which is the point) will be overwritten by new data.