Technology Screen Recording Issue

Before I say anything I am using a MacBook Air, and the screen recording system "QuickTime Player."
So heres the issue, I was playing WarZ yesterday and I came across two hackers, so I started recording and got lots of proof they were hacking. When I saved the video file and searched for it in "All My Files" so I could upload it to YouTube, I didn't appear. I checked the QuickTime application, but the video I recorded literally wasn't anywhere.

I thought maybe I clicked a wrong save button, so I Tped back too the two hackers and got another video. I named it the same name as the first vanished file, and made sure I clicked "Save Video." But when I clicked save, it said a file with that name already existed. So the first video I took did exist somewhere, but I still couldn't find it anywhere on the entire computer. I tried clearing trash, restarting, and all that stuff, nothing helped. But now, all recordings I take with QuickTime Player, just disappear. I know for sure I'm saving them correctly, but they just vanish. Letting two hackers escape justice.

If anyone knows what's going on, or can help me fix this, I would be greatly appreciative. This glitch is very frustrating.

 

There isn't a single folder, they are saved to the computers files.

 

That isn't really what I need to know now.

 

Does anyone think it might be having too much footage on youTube? Or Quick Time had a total recording limit? Or other tiny issues like that?

 

But it's never done anything like this before, and I don't know what caused this to start.