Thanks Sam and Rick. I always debug extensively during my game building using Debug.Log statements, but have never used the VSC debugger because I never bothered to look into it. Never realized it was so simple to get running.
Tip: I couldn’t configure the debugger as Unity Debugger (Unity was not one of the options in the dropdown), and it was because there was already a file in my project:
.vscode/launch.json
I deleted this, and it let me then build a new one configured for Unity.