Local zoom recordings

Hello,

I recorded a session with my friends. We were recording multiple sessions during the same zoom meeting, we were recording voice for a drama. So, we had to take many retakes. During the meeting when the recording was stopped, I renamed one of the files to some other name and then started recording for another take. After the meeting ended, I double clicked the recordings to convert, but nothing happens when I double click them. Any ideas on how I can salvage these recordings? Thank you so much for your help. I have 3 recordings to convert.