After performing a recording, it will be complete when you click the Stop button, not the Pause button.
Also, a recorded file only appears in the chat window of the user who has performed the recording and only he/she may download it.
If you do not see a recorded file,
first click the three-dotted icon next to Chat/Participants to find Announcements, Files, and Record.
Click Record and you will see the recorded file. Then, download the file.
However, if you are a Basic or Premium plan user,
the Record feature is not available.
Please note that recoding will not proceed even if there is the Record button at the top.