Noob iOS dev here (I'm hardly a dev too). So I tried many things to get app IPA, but none of them worked on macOS Catalina, mainly because the Apple Configurator immediately crashes. So that's not an option.
But all the resources on the internet are guides for obtaining IPAs from the iPhone of already distributed apps from the AppStore (such as Facebook IPA). Is there a way this can be made easier for an app that I have not distributed to the AppStore and only locally (both on my Mac and on my iPhone)?