Flash drive doesn't save files

Hi. (Sorry in advance for my english)
I have a flash drive which is supposed to be 128GB. I saved some movies in it (they work fine), but I can't save any more files, and I should still have space left.

Whenever I try to save another movie, It shows me that is loading to the flash drive, but it takes a lot of time, and when it's finally done and I open the file, it has nothing inside. It just saves empty files.

When I right click it --> properties, it says "capacity: 124 GB, used space: 32 GB, available space: 92 GB"
If the flash drive has less space than stated, shouldn't it say that there's not enough capacity?

Thanks for helping :heart :heart

 

Indeed, it says FAT32. But the movie I try to save is less tan 2 GB ): And the others movies were the same size (<2GB) and they work fine. I don't know what's going on ): maybe they lied and the USB stick never had that capacity...? (Btw, thanks very much for the help)

 

Greetings, Lucy90.

One thing you might try: in Windows Explorer click Tools > Folder Options > View (if you're using Windows 10 your path would be File Explorer > File > Options > View)...in the Advanced Settings box enable the "Show hidden files, folders and drives" button and OK out...now check your flash drive and see if there are any formerly invisible folders and/or files.

Be advised: for security's sake you'll want to disable this setting after testing.

Also: what's the make and model # of your flash drive?