You want to make things clear right from the get-go: for which devices can your chosen studio develop an application for? Do they specialise in iOS, Android or crossplatform (apps that work on both ...

As the title says, the methods I know can only locate the path of the compiled binaries, but in reality this is a temporary path that has nothing to do with the .cs file.

Maybe, path is not set(for GUI application). Please set dotnet command path by launchctl. I'm not sure how to do that. I googled that and found a command to run, so I ran sudo launchctl config user ...