How to send recorded audio file as a voice message in Facebook messenger?
Voice message works when you put it to record your voice and send it.It won't allow you to send a recorded message.
You can do is to upload the file to the cloud and share the link via messenger.
I understand. Any other workaround which you may think of
I think,this is the best way as they can download the files if they have an account in Google drive,dropbox.
Other solutions might require user at the other end to use any other specific app.