Hi Gurd58,
Welcome to the Apple Community,
where some of us do our best to help each other troubleshoot.
Sorry I'm not familiar with using WhatsApp,
so please excuse me if this suggestion below is unsuitable for you.
Wondering if you might want to use the "Voice Memos" app instead, to make your voice recordings.
Seems you'd need just a "tap" to start, and a "tap" to finish recording.
- To begin recording, tap
. Tap
to finish recording.
Apple support have an article online (link below), with all the "how to" info.
Seems, while you’re recording, you can use another app,
as long as it doesn’t play audio on your device.
If the app starts playing audio, Voice Memos stops recording.
(You can pause Voice Memos and then continue. )
Article: Make a recording in Voice Memos on iPhone
https://support.apple.com/en-gb/guide/iphone/iph4d2a39a3b/ios
_____________________________________________________
And to "Share a recording in Voice Memos on iPhone"
- In your Voice Memos list, tap a saved recording, then tap
. - Tap
, choose a sharing option, select or enter a recipient, then tap Done or
.
https://support.apple.com/en-gb/guide/iphone/iph3d6dc359/ios
Hope this alternative may be worth trying :-)