Hi I'm a new participant in the forum basically because I can't seem to find the solution to this anywhere.

I have a massive slide presentation in PPT that I edited to make a similar, albeit different copy and hit save as to name the new one. The original is now gone. I can't seem to find it anywhere so I'm hoping to revert back the new file. I've tried free versions of every software I could find but they all want like $50 for the real version that can restore this. Note: I'm not running parallels or any windows os.

How can I get the previous version back? I've been able to see prior version appear in the demo versions of some of these softwares but can't seem to find out where to go to find this file. If anyone can help it would be huge for me!

Thanks for reading.

Best,
Graham