You have a great Open-source implementation named whisper.cpp and a few graphical user interfaces for it:
https://github.com/ggerganov/whisper.cpp
https://goodsnooze.gumroad.com/l/macwhisper
Personally I use MacWhisper pro because it’s very convenient.
1: https://apps.apple.com/us/app/just-press-record/id1033342465
The other option is to use the Voice Memos app on Watch and then use the voice memos app on iPhone to share it to something like Otter.ai.
If you want to bulk upload then just press record is likely better because it’ll save them in iCloud, and then you can bill drag and drop upload them on your Mac.