broken recording

I had to record some interviews to my computer since I couldn't figure out how to get the correct view while saving to the cloud (gallery as opposed to speaker) in my settings. Three of the recordings seem to have issues. I can't open two at all (get an error when I try to watch them or listen to audio) and for one, I can only open the audio. I have a feeling that there's nothing I can do about this since I didn't record to the cloud, but thought I'd ask for help, just in case. Any help would be appreciated!