Hi! I recently came across a great article on Apple Guru that talks about the X best programs for recording internal audio on a Mac. If you have a need to record audio on your Mac without additional hardware, you should pay attention to this guide
https://apple-guru.de/x-best-internal-audio-recorders-for-mac/. This article presents different tools with different features and capabilities, so you can choose the one that best suits your needs. Have fun using these programs!